Yellow-billed Magpie

For Memorial Day weekend this year I went up to visit my family in Paso Robles. Cooking and visiting with family consumed most of my time. I got very little time to look at the birds and animals. I did though run across a few birds and managed to take a couple photos. One of the local birds that is fairly common near my folk’s ranch is the Yellow-billed Magpie. Yellow-billed Magpie is one of California’s two truly endemic birds the other being the Island Scrub-Jay of Santa Cruz Island.

Nacimiento Road to the north of town is a very good place to find this bird. In the morning on Memorial Day I took a very quick look for these unique and beautiful birds. Declining populations due to such factors as West Nile Disease and loss of habitat has caused great concern lately. They are quite vocal and their distinctive plumage makes them easy to find in the oak habitats that they frequent. The Black-billed Magpie is almost identical. Yellow-billed Magpie has always been my favorite of the two because of their striking yellow bill.

In my brief birding time I also took a walk one night in my brother’s vineyards. This was just irresistible since I could hear Great Horned, Barn and Western Screech-Owls at night. This young Barn Owl, who did not yet fly very well, fluttered out of a nearby tree and onto the ground right in front of me. It is such a pleasure to see so many Barn Owl boxes in the agricultural areas in the Central Valley of California.

Many places across the US have seen tremendous declines in Barn Owl populations due to loss of habitat and in particular nest site availability. In a drive through the Central Valley of California you can see that many of the vineyards have put up Barn Owl nesting boxes on poles about 10-15 feet high dispersed throughout the fields. Ranchers and vineyard owners like to attract the Barn Owls because they help to control rodent populations.

Owling Yosemite

A Quick Trip to Yosemite

Yosemite Coyote with thick winter coat

On Saturday/Sunday May 22-23 two of us made a quick trip to Yosemite National Park to do some spring owling. This is generally a very good time to go to Yosemite because the Flammulated Owls are calling. I usually try to head up to Yosemite the weekend before Memorial Day. This way I don’t hit the big crowds. This is also the perfect time to find Flammulated Owls.

This year, it proved to be the wrong time for this because of cold weather. The Flammulated Owls were calling. Although it was only 35°F at night and often snowing. This is far too cold for this Southern California boy to be out owling! This does not include the curve it throws into taking pictures. As a brief summary we did find a lot of Flammulated Owls, as I would expect. Unfortunately, the owls seem to be much more secretive in the cold weather and I didn’t manage any good photos. We also saw a Great Gray Owl but once again did not get good pictures. He (actually she!) flew in very close, I think just to tease me, and then continued on into the forest to call at us from a distance. As a last owl for this quick trip we heard Northern Saw-whet Owl.

Try Again Soon

I generally expect to find and take pictures of Flammulated, Great Gray, Northern Pygmy, and Spotted Owls. On a good trip, or if I am looking to find species, I will add Northern Saw-whet, Great Horned, Western Screech and Long-eared Owls. This means I will return in the next few weeks so stay tuned. I don’t often miss, look for photos here soon! This handsome coyote above gives a feel for the weather and was taken with my Canon 7D camera using a 100-400mm lens.

Digiscoped Video – American Oystercatcher

On Saturday, May 22, 2010, I followed up on a report of an American Oystercatcher at a few locations in Laguna Beach. I tried Crescent Bay first, and was fortunate to find five Oystercatchers on the rocks below the point. There were three Black Oystercatchers, while the other two looked pretty good for Americans.

What are they?

Black and American Oystercatchers interbreed and their hybrid offspring can be anywhere on a cline from pure Black to pure American. We had to evaluate these birds for purity. J. R. Jehl, Jr. developed a rating system used by ornithologists to determine where on the cline a given bird falls. Because there are several genetic variations that are involved, we use ten different characteristics to judge the birds. Nine of them have a score between 0 and 4. The belly coloration goes from 0 to 6. A bird with a score of 0 to 9 rates is a pure Black Oystercatcher. One scored from 30 to 38 is pure American, and everything in between is a hybrid.

I took this video with a Nikon CoolPix P6000 attached to a Kowa TSN-884 spotting scope at a distance of 96 yards measured by a Zeiss Victory PRF laser rangefinder.

Is Either an American Oystercatcher?

The Oystercatcher in the center of this video has white upper tail coverts (Jehl’s score 4), basal half of all retrices were white (4), chest sharply delimited black to white on upper chest (4), belly entirely white (6), undertail coverts entirely white (4), thighs entirely white (4), greater secondary coverts 6-15mm (3), white present on some of inner primaries (3), underwing coverts entirely white (4), axillaries entirely white (4). The Jehl’s score for this American Oystercatcher is 36 out of 38.

The hybrid Oystercatcher, seen on the left as the video starts, has upper tail coverts black (Jehl’s score 0), retrices mainly black with some white in the vanes (1), black chest bordered by jagged edge on upper chest (3), belly entirely white (6), undertail coverts mainly white (3), thighs entirely white (4), greater secondary coverts 6-15mm (3), white present on secondaries but not primaries (2), underwing coverts mainly white (3), axillaries entirely white (4). Jehl’s score is 28 out of 38, so close, but not close enough.

Texas Owls

Two of us visited the gulf coast to search for Texas owls. At this time of year we also went to see some of the North American bird migration. Trying out a few of the new products we are starting to offer at Optics4Birding was a great excuse for our trip. We flew in on April 20th and returned home to southern California on April 28th. In this entry to the blog I will be talking mainly about the Texas owls we saw. More details, calls, and photos can be found on our sister web site Owling.com.

During the last 4 days of our trip, we were in the lower Rio Grande Valley. It was there that we found the three Texas owls species featured in this post. I shot all of the photos in this post with the Canon 7D digital camera. Optics4Birding now carries Canon cameras, lenses and accessories. I have been shooting with Canon equipment for many years now. Yet I got a new 7D virtually the day before this trip. I can’t say enough good things about this camera. It was very impressive. We saw lots of birders carrying them while we were out in the field.

Elf Owl – The First of the Texas Owls

Elf owl in tree cavity

The first of the Texas owls that we came upon was in Bentsen Rio Grande Valley State Park. We happened to be watching a Golden-fronted Woodpecker. I thought the woodpecker might be nesting in this tree when he stuck his head in a hole that was near the top. I guess not! The woodpecker quickly jumped off to the right and out popped another little bird’s face to see who the intruder was. I wasn’t quite ready to take pictures of this event but I had the Canon 7D equipped with a 70-300mm IS lens. The lens is small, light and easy to carry in the field. This lens is great for birders who want a simple lens to catch moments just like this.

The woodpecker and the owl

Elf Owl looks to see who is outside

As the bird emerged from the hole, I realized it was an Elf Owl with its little round face. This is debatably the smallest owl in the world (one South American species may be slightly lighter). With that big powerful bill we had to wonder why this woodpecker was being so cautious. The Elf Owl is only about half his size. We asked the ranger about this. He said that the woodpeckers had been hanging around the hole that the owl resided in. I think that the owl stole this hole from them and they weren’t happy about it. Although Elf Owls are strictly insectivorous, the woodpeckers are being cautious that the owl does not bite them.

Elf Owl size and Habits

This Elf Owl realizes we are outside too!

The Elf Owls are one of the most migratory owls in North America and generally only occur as far north as Texas, New Mexico and Arizona, arriving each spring. Elf Owl is a tiny bird, about the same size as a large sparrow. It pleased us to have stumbled across this encounter between the owl and woodpecker. This owl was just too cute as he looked out at us sleepily. We joked about how tired the owl was. It just couldn’t quite keep its eyes all the way open as it peered down at us. The owl quickly retired back down in his hole. It was a treat to witness this interaction. I knew the Elf Owls were possible here although I wasn’t specifically looking one. Obviously birds respect all owls, regardless of their size!

Eastern Screech-Owl

This Eastern Screech-Owl in Texas is well camouflaged against this tree trunk.

The next of our Texas owls was an Eastern Screech Owl. We chanced upon this one only a few hundred yards from the Elf Owl. This is the eastern cousin of our Western Screech Owl from home, and the two species are extremely similar in appearance (debatably indistinguishable by appearance alone). The Eastern Screech-Owl, like the Elf Owl, is strictly nocturnal and was visibly very sleepy. This picture is also a great example of the potential photo quality using the 70-300mm Canon lens. This owl has very good camouflaged plumage. Standing at the entrance to its hole, when it closed its eyes it was almost invisible against the tree trunk.

Spooked by something this Eastern Screech-Owl in Texas fly’s up onto a tree branch

Suddenly, the owl opened its eyes and flew to a nearby tree. It didn’t seem too bothered by me taking photos but something it heard woke him right up and it was very alert. Although I have taken many pictures of Western and Whiskered Screech-Owls, Eastern Screech-Owl is the only screech-owl species in all of North and Central America that I had not previously photographed. In fact, Eastern Screech-Owl was the last North American owl species I needed to photograph. That made this bird a very special one for me, and it also saved me from further night owling adventures with the Texas mosquitoes (I had missed finding Eastern Screech-Owl in the Houston area).

Ferruginous Pygmy Owl

Ferruginous Pygmy-Owl in Texas

The last owl we planned to see in Texas was the Ferruginous Pygmy Owl. It is the rarest owl in North America, found only in Arizona and Texas. I have seen this owl a few times in Arizona. Though very small (as the name implies) Ferruginous Pygmy-Owls are incredibly ferocious. They feed mostly on small birds, but will attack birds up to twice their size. For this bird, I used the 400mm non image stabilized Canon lens. I think the pictures speak for themselves in quality although I am used to using and prefer a zoom lens. The 100-400mm IS Canon lens is also very popular amongst birders and what I normally use for taking photos while bird watching but this is a discussion for another time.

Behavior

This Ferruginous Pygmy-Owl in Texas was calmly sitting on a tree branch. It kept a sharp eye open for potential prey.

It is hard to appreciate how small the Ferruginous Pygmy-Owl really is: though larger than the Elf Owl, it is still only half the size of a Mourning Dove. I once saw a Ferruginous Pygmy-Owl take a bite out of a dove in Mexico while it was making a dive-bombing run at the owl. Other birds may mob and make a fuss about a pygmy-owl in their area, but if one of the attackers gets a little too close it becomes lunch for the owl. The identifying markings of this owl are the streaking on the crown and the rust color on the tail. Northern and Mountain Pygmy-Owls both have round white spots rather than streaks on the crown and white tail bars. Both those species are usually found at a higher elevation.

Texas verses Arizona

The white forehead streaking of the Ferruginous Pygmy-Owl separate it from the similiar Northern or Mountain Pygmy-Owls.

Ferruginous Pygmy-Owl is getting easier to see in Texas because it is found on well-known ranches where, for a small fee, the ranchers will take you out to see them. These photos were taken at San Miguelito Ranch where there was a breeding pair. The owners couldn’t have been nicer and we got very close looks at the owls. I assume there are similar numbers of these owls in Texas as there are in Arizona. A few years ago while helping the Arizona Fish and Game one of the guys told me they figured there were about 17 pair in the entire state. Finding any on your own could be quite difficult, so going into a known ranch is probably a good plan to see this owl.

Neighborhood Greater Roadrunner

Walking down the sidewalk, the Greater Roadrunner in our Neighborhood

High school is out for Easter vacation this week. It was fun to see our local neighborhood Greater Roadrunner on my walk this morning. He was just walking down the sidewalk next to Aliso Niguel High School. He seemed interested in the guy taking his picture too.

We are watching at Optics4Birding.

Enough of the pictures and it was time to dash off… crest down, head down, lean forward and go!

One last stop up the hill to see why the guy with the camera was still following.

About the Greater Roadrunner

Most of us who grew up with the Warner Brothers’ Roadrunner cartoon have some of the basic facts wrong. It is true that, in real life, coyotes are one of the main predators of roadrunners. Contrary to the cartoon though, coyotes can run at speeds up to 43mph. This speed is more than twice as fast as a roadrunner’s top speed. The cartoon was a much nicer thought with the roadrunner’s “meep meep” and then zooming away from Wile E. Coyote in a cloud of dust. In the real world there are many stories of charismatic Greater Roadrunners. These stories include everything from roadrunners courting people, to tapping on their windows, to leaving them prey each morning on their doorstep.

Species

Greater Roadrunner is part of the cuckoo family. There is a smaller Lesser Roadrunner from Western Mexico (with small disjunct population in Yucatan) to Central America. The two roadrunners have only a small overlap of range in Sonora. The Greater Roadrunner has underside streaking missing on the smaller Lesser Roadrunner.

Habits, Habitat and Range

Although the roadrunner can fly it is considered a weak flier. Spending most of its time on the ground sometimes it will fly onto a low perch like a fence post. It lives in semiarid scrubland or the deserts of the South-Western United States to Central Mexico. In the US it can be found as far east as Louisiana, Arkansas, and Missouri.

Food

The Greater Roadrunner will eat most anything it can catch. It feeds on many larger insects and arthropods including tarantulas and scorpions. Lizards, snakes, mice, and small birds are also common food items. The roadrunner can jump into the air to snatch a hummingbird. There is popular discussion of its ability to catch and eat rattlesnakes. This often includes a team effort. One bird will distract the snake and the other will sneak up and attack it from behind. During winter months some fruits such as cactus fruit make up a portion of its diet.

Nesting and Brooding

Generally, the Greater Roadrunner mates for life. The pair build the nest 2-13 feet off the ground in a cactus, tree, or crotch of a sturdy bush. The nest is usually well concealed. The male gathers sticks, grass, leaves, feathers, and twigs. The female creates a platform up to 18 inches in diameter with a 4-inch-deep nest cup. The female may scold the male if he takes too long in bringing nest materials prompting him to get back to work. Both parents incubate the eggs for 19-20 days yet the male spends the greater time.

Nix Nature Center: Winter Birding

The James and Rosemary Nix Nature Center opened on St. Patrick’s Day in 2007. Oddly, it remains to this day, one of the better-kept secrets of Orange County open space. Conveniently located, this unit of the Laguna Canyon Wilderness Park is always well worth a visit. I have been stopping by periodically ever since it opened, often going for an hour or so before work during the week.

Although its official hours are 8:00 am to 4:00 pm, I often find it open earlier than that, which is really nice! I go mainly for the birds, of course, but anyone interested in hiking or relatively easy mountain bike trails will find something to their liking here. And in wet years, the wild flowers can be spectacular too. Just a piece of advice: if you plan to visit Nix Nature Center on a weekend, get there early. To keep the place from getting loved to death, parking is deliberately limited to four small lots.

Digiscoping at Nix Nature Center – White-crowned Sparrow

Digiscoping Birds

I was working on a review of the Leica D-LUX 4 digiscoping system. Happily, the Nix Nature Center is a great place for pictures. It was a gray overcast March morning when I stopped by. Phainopeplas were busy spreading mistletoe to every available sycamore branch. Small flocks of Zonotrichia sparrows (just Golden-crowned and White-crowned this year) sang and fed nervously in the open spaces around the parking lot.

This sub-adult White-crowned Sparrow teed up for me in a luxuriant laurel sumac. First I took a picture with just the camera. The sparrow is that white dot at the top of the bush. But with the Leica Apo-Televid 82 scope in line, the charms of this young bird become much more apparent. These photos were not cropped in any way, to make the magnification of the unit more apparent. Always check the sparrow flocks carefully in winter. I’ve seen Lincoln’s, Savannah, Chipping, and Brewer’s Sparrows mixed in with the White-crowns, and a Black-chinned Sparrow in early spring. Generally, they’re feeding right out in the open on the ground.

California Towhee at Nix Nature Center

Local Residents

Generally, California Towhees feed near the parking lot, kicking the mulch and leaves with both feet as they root around. You can see the characteristic ‘pumpkin butt’ and hints of buff around the base of the heavy seed-eating bill. The canyons often echo with the loud “chink” calls of this common resident. A close cousin to the California Towhee and Spotted Towhees live here year-round. But I’m still searching for my first wintering Green-tailed Towhee there.

Western Bluebird, Nix Nature Center

Willing to take advantage of a nest box hanging anywhere, Western Bluebirds usually feed from low perches. They even frequent the parking lots unless crowds of people have chased them into hiding. I found this female hunting from on a bare sycamore limb. As usual, she was too shy to permit close approach. But the extra “reach” of the digiscoping outfit easily brought her in close without the need to disturb her further.

Nix Nature Center Habitat

Nix Nature Center sits on typical scrub land, with patches of oak-sycamore community in the wetter areas. However, a short walk from Nix brings you to other habitats. The network of trails links up with the other 6600 acres of the Laguna Coast Wilderness Park. These include Dilley Preserve, Willow, Sycamore and Laurel Canyons, and farther away, Crystal Cove State Park. Walking under Laguna Canyon Road takes you to Barbara’s Lake, the only naturally occurring lake in Orange County. There you always find Pied-billed Grebes and herons. Occasionally, Least Bitterns nested there in past years. So when you get a chance, check out this wonderful little park, and see what you can find.

Digiscoping with the Leica D-Lux 4 System

We received a D-Lux 4 digital camera and several adapters from Leica to go along with the impressive Apo-Televid 82 scope (see scope review here) and have been happily field-testing it for several weeks now in preparation for a full review on the digiscoping outfit. This post is not a full review. Rather it gives people an idea of the capabilities of this adaptable and really easy-to-use outfit.

The rig consists of a D-Lux 4 digital camera, the digiscoping adapter and the Apo-Televid 82 scope and tripod. Given the weight of the scope, I opted for a full-sized carbon fiber tripod to counter-balance it. A carbon fiber tripod has the advantage of damping down vibrations. This is important when taking pictures, especially without a cable release. Unscrew the aluminum ring from the camera lens to reveal the adapter mounting threads. The adapter fits over the eyepiece (in this case, the 25-50x zoom eyepiece) and fixes in place with a set-screw. And that’s it! The whole operation takes about 30 seconds.

White-faced Ibis, digiscoped with Leica D-Lux 4 system

Photography

The first question most folks want to ask is: what kind of pictures can you take with this rig? Well, as it turns out, pretty good ones! For example, take a look at the detail in this basic-plumaged White-faced Ibis from San Joaquin Marsh Sanctuary. In winter, White-faced Ibis lack the white facial skin that gives them their name. Also, mottling appears on the head and upper neck. Note the pinkish tint to the tip of the long decurved bill, and the facial skin. The appearance of the back and wings suggests this bird undergoing pre-alternate molt. Highly iridescent green feathers replaced some of the dull older feathers on the head, belly and neck. While shooting, this bird got too close for photography, and to take these pictures I had to move back!

Whimbrel at rest

Image Richness

Another question is whether the image richness is sufficient to support really fine details of plumage and pattern. These resting shorebirds provided a good example proving it does. It also shows that the subtle plumage details stand out against a bright background.

Look at the feather detail in this Whimbrel. Note the pale buffy fringes of the wings and back and the warmer cinnamon tones of the breast. The rufous crown stripes stand out. The white eye ring pops, and the lower mandible is pink, while the legs are bluish gray. Even the rippling reflection below is rich with detail. The preening Long-billed Dowitcher is just a bit too far in front to be fully in focus. Still, some great feather details are visible in it too. Look at the dark-centered, pale-edged wing coverts to the dark chevrons on the sides of the belly. So, even in challenging light, surprising image detail is available.

Perched Vesper Sparrow

Portability

How cumbersome and slow is the Leica D-Lux 4 digiscoping unit? Well, it’s really not. In fact, using this unit, I can often capture sharp images of small and rapidly moving birds. This group of Savannah Sparrows kept hopping up onto a barbed wire fence and alighting for a few seconds before spooking and dropping back down into the grass. But with a bit of luck and timing, the D-Lux 4 still caught this Vesper Sparrow, an uncommon bird in Orange County, among them. Note the characteristic white outer tail rectrices and black inner ones. The wind ruffled its head feathers, giving it a ‘punkish’ look, but the thin white eye ring is visible around the black eye. The depth of field is fairly good here too. We took this photo in 16:9 ratio mode, which yields a broader shot.

Lesser Goldfinch feeding

This feeding male Lesser Goldfinch provides another example. This bird was only about 25 feet away when I took these shots. But he kept hopping from plant to plant in search of more succulent bits to munch. You can see a piece of his meal clinging to the edge of his beak. Our west coast LEGOs have greenish backs with black streaking. Whereas those of the interior sometimes show completely black-backs. And of course, the Danish LEGOs come in many colors and can be used to build amazing things? The camera and scope picked up the subtle markings of the bird along with details in his claws along with the brilliant orange hues of the flowers and their green foliage.

Conclusions

So that should answer your questions. Digiscoping with the Leica D-Lux 4 camera and Apo-Televid 82 scope is incredibly easy. Additionally, it’s a lot of fun. If you don’t hear from me for a while, it’s because I stole this unit and went on the lam!

San Diego Bird Festival Pelagic Trip

Black-footed Albatross – San Diego Bird Festival pelagic

Recently, Optics4Birding participated as a vender in the annual San Diego Bird Festival. After three days of talking with people about optics, it felt great to revert to merely being a birder. At the gracious invitation of Swarovski, I joined the Islas Coronados Pelagic Trip. I have been on a few of these festival pelagics before, but this was my first in some time. Over the years, the trip underwent some important changes. While it was always good, I am happy to report it is even better now!

Trip Details

Years ago, it was just a 4-hour jaunt to the Coronado Islands of Mexico with the major target being Brown Booby, which occasionally roosted on the cliffs of Middle Island. On a good day, you maybe saw two of them. Recently, the festival switched operators, and SoCal Birding now runs the boats. In addition to the Coronado Islands trip, there is an 8-hour venture to the 9-Mile Bank. This vast underwater seamount features deeper, colder, nutrient-rich waters that lure in a host of pelagic life forms to this point just 14 miles offshore. It is worth noting that the leadership on these trips is truly world class. Some of them literally wrote the book; others just know enough that they could have! Kudos also goes to Swarovski Optik, who generously subsidizes the trip. That holds down the cost so participants can get a great trip at an amazing price.

As the bus left Marina Village where they hold the festival, rain streaked the windows. But excitement kept the mood upbeat as we boarded the boat during a dry spell. As usual, Swarovski, was loaning binoculars to anyone bold enough to take them. I brought a pair of 10×42 EL Swarovision binoculars from Optics4Birding so on my way onto the boat, I clarified with them the important difference between loaned (theirs) and “stolen” (ours!). Conventional wisdom says you don’t take 10x bins onto a boat since they’re harder to hold steady. And frankly there are enough impediments to steadiness on a pelagic trip. You wouldn’t know it by me! The waters were calm, with the waves seldom exceeding 5 feet with only minimal wind. I had cracking views all day, and the extra magnification was very useful on the more distant birds and mammals.

Brown pelican in flight

Leaving the Harbor

On our way out of the harbor, we saw all the expected species, starting with Double-crested and Brandt’s Cormorants. A number of dark-bellied Brant swam by, and a Herring Gull mixed in with the common Western and Heermann’s Gulls. A wintering Long-tailed Duck among the Surf Scoters and a young Glaucous-winged Gull added spice to the mix. A frightful crush of cormorants, herons, egrets and pelicans sat on the bait barge. But several Black Turnstones lent the place a bit more dignity.

Common, Pacific and Red-throated Loons were all present in the channel as we headed out to the 9-Mile Bank. A Parasitic Jaeger was chasing gulls and terns at the tip of the headland. Shortly thereafter, the first Rhinoceros Auklets appeared, looking like stubby shoeboxes with wings. Rhinos are probably closer to puffins than other auklets, and this was evident in those that allowed us closer approach. Soon Cassin’s Auklets, barely 1/5 the size of the Rhinos, were zinging away at our approach. They looked like little gray tennis balls in flight. Our last alcid of the day was Xantus’ Murrelet, which almost invariably appeared in pairs. These were birds of the locally-breeding scrippsi sub-species. They show prominent white eye crescents, but lack the white cheek patch of the northerly-breeding hypoleucos sub-species.

Common Dolphin porpoising, San Diego Bird Festival

Marine Mammals

No less exciting than the birds were the mammals. We saw several pods of Risso’s Dolphins with their characteristic scarring of the upper body and their large dorsal fins. Risso’s Dolphins feed primarily on squid, who take vigorous exception to the process. These dolphins also use their teeth on each other to communicate. Thus, these dolphins often look like Jackson Pollack art. The trip also yielded some close encounters with multiple Finback Whales. California Sea Lions were everywhere, and on the rocks of the Coronados, we saw Harbor and Southern Elephant Seals. The last two mammals were Pacific White-sided Dolphins and Short-beaked Common Dolphins. Experts recently separated them from the Long-beaked species. Evidently, the splitters hold sway among the mammologists too!

We also saw scattered tubenoses, beginning with another local breeder, Black-vented Shearwater. Their small size and rapid wingbeats made them fairly easy to distinguish from the larger shearwaters we would see. By contrast, the much larger Pink-footed Shearwaters have a more languid wingbeat and frequently glide for long distances. Intermediate between them was a single Sooty Shearwater, unique among these three species in having an all-dark belly. Their silvery underwing linings (rather than clearly white) are a distinguishing field mark . Much discussion raged around a putative Short-tailed Shearwater. But the best was still to come.

Black-footed Albatross – takeoff

Great Tubenoses

First, a Black-footed Albatross was found and lured to the crowd of gulls among the chum at the back. A constant dribble of cod liver oil kept it following us for quite some time. So everyone got great looks at this spectacular ocean wanderer. Then a Northern Fulmar brought everyone to the railing. This bird showed its classic blunt, bull-headed look, emphasized by the steep forehead. Right on its tail came the unexpected gem of the trip: a gorgeous Laysan Albatross. This bird nearly caused participants to capsize the boat when it cut sharply across the bow, and everyone raced to that side. Okay, not really, but the pandemonium was impressive!

Flying Brown Booby

Visiting the Coronado Islands

When we got closer to the Coronados, we began seeing Brown Boobies in flight. Soon we were at the nesting/roosting cliffs at Middle Island. We saw them in great numbers, logging between 25 and 30 individuals. Our trip around the South Island netted us a Wandering Tattler or two, a few Black Oystercatchers, and then a very interesting American x Black Oystercatcher hybrid. We see such birds fairly frequently in southern California, but this one was particularly pretty. Eventually, we headed north to return to San Diego. A Black-footed albatross taunted us on the way, coming in behind the boat and hanging with us for quite a while before veering away west and out of sight within a half mile of the U.S. border. But then it, or another like it, returned shortly after we crossed the border, followed by a second individual.

Double-cresting Cormorant in full alternate plumage

Not to be outdone, a Brown Booby showed up in flight fairly close to the channel mouth. Immediately after that, a Parasitic Jaeger was seen hounding an Elegant Tern. While we were docking, this fantastic Double-crested Cormorant showed up in all his nuptial splendor. You seldom get to see them looking this fine, a fitting end to a great trip!

Vortex Razor Spotting Scope: Digiscoping

Example of what you see without the Vortex Spotting Scope

Many spotting scopes these days provide the attachment options for digiscoping. Consequently, this offers the ability to attach a digital camera and use the scope as a telephoto lens to take photos. Digital photo adapters vary widely in their design, ease of use, and speed to deploy. They also range in their compatibility with respect to the cameras they can accommodate. The Vortex Razor Spotting Scope is a relatively recent entry in the spotting scope market, providing high-quality optical performance at a very reasonable price (see Vortex Razor Scope Review). Vortex offers a digiscoping adapter for use with the Vortex Razor Spotting, so I took it out in the field to give it a try.

Digiscoping with the Vortex Razor Spotting Scope

Photo taken with Vortex Razor Spotting Scope

Digiscoped with Vortex Razor Spotting Scope

I went out this past Sunday to Laguna Niguel Regional Park with the Razor scope equipped with its 20-60x zoom eyepiece, the Vortex Razor Digital Adapter, and my Canon 40D camera with a 50-mm lens. This was my first attempt to digiscope with this equipment combination, so the pictures here are mostly to show what is possible and do not represent fully optimized photography with this rig.

An Osprey eating lunch at the park provided an interesting and challenging subject for this demonstration. The bird was sitting in a eucalyptus tree in rather unfavorable lighting. So as an illustration, we first took the photo (above) with the camera only. This is to show the level of zoom with and without the scope in line.

Next, we zoomed the eyepiece on the scope to about 40x and took the same photo (right) through the scope. As a result these photos give a good comparison of what a dramatic difference shooting through a spotting scope makes. This camera/scope combination at this magnification is equivalent to about a 3200-mm lens. This will vary from 2000 to 4000 mm at this level of zoom depending on the type of camera. We have not cropped these photos in any way. They are full-frame shots. We have only resized them to fit the pages here.

Golden Eagle at El Toro Marine Corps AS

A Stop Before Work

I made a quick stop coming into work this morning by the El Toro Marine Base. Flying overhead was the Golden Eagle that I have heard has been in the area recently. It appeared that there was some rather small bird chasing it. This seemed a bit unusual so I thought I’d watch what happened. I got out my camera to take a couple photos. So maybe I could figure out later what the smaller bird was that was chasing the eagle.

My first looks at the smaller bird chasing the Golden Eagle

The Realization

As I watched the smaller bird chasing the eagle it began to dawn on me what that small bird was. That was no small bird. The small bird was a Red-tailed Hawk! Furthermore, he has a 4+ foot wing span. Seeing these two birds next to each other in flight really makes it clear how big that eagle is.

Golden Eagle being chased by Red-tailed Hawk

At a closer look the smaller bird is a Red-tailed Hawk!

Getting Close

As I continued to watch, the hawk was getting closer and closer to the eagle. Pretty soon, wow, he is right behind the eagle. Now I am beginning to wonder what is going on here. Wow, he is getting close!

The Red-tailed Hawk is getting very close.

The Attack

Now the excitement really escalates. So to my amazement and mid-air… ATTACK! The Red-tailed Hawk finally attacks the Golden Eagle. This is probably 100+ feet overhead. The eagle flips upside down and both raptors go at each other with talons extended.

Twice I watch this until the two raptors are out of view. This is not because they far away but because they are dropping in altitude and I loose sighting of them with a nearby low hill and obstructions. What a sight!!! It was also a stroke of luck that I decided to take a picture.

aerial attack on a Golden Eagle by a Red-tailed Hawk

Red-tailed Hawk attacks the Golden Eagle in an incredible aerial display!