Friday, November 11, 2011

Western Sandpiper

Western SandpiperWestern Sandpiper, Gearhart, Oregon, 6 August 2011 by Greg Gillson.

 

In the winter, flocks of small sandpipers chasing the waves in-and-out on the beach are likely to be Sanderlings. However, during spring and fall migration, nearly any shorebird may be found on the beach.

These "peep" (small sandpipers in the genus Calidris, named for their peeping calls) are Western Sandpipers.

I took this photo near sunset while on a picnic at the beach this summer.

What else can we learn from this photo above?

The sandpipers have partial webs between the toes that you can see in these photos as a wedge at the base of the toes. The presence or absence of this feature is important to note for identifying certain rare Asian stints (name of peep in Europe and Asia) that show up from time to time in the Pacific NW. The abundant Least Sandpiper has unwebbed toes--practice seeing this field mark with these two common species so you are better prepared when something unusual shows up!

Sanderlings do not have hind toes. You can clearly see the small hind toe on the one raised foot of the Western Sandpiper above.

There are three bright, colorful, and crisply-plumaged juveniles on the right, one disheveled dull-backed adult on the left with chevrons on the sides of the breast. Most adults start migrating back to the wintering grounds several weeks before the juveniles. This photo was taken during the period of overlap in early August.

 

Western SandpiperJuvenile Western Sandpiper, Gearhart, Oregon, 6 August 2011 by Greg Gillson.

 

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ID challenge... Western Sandpiper and Semipalmated Sandpiper

Tuesday, November 1, 2011

Advanced birding means learning the basics


When we learned our native tongue we grew into it slowly. We spoke it at home. We slowly added vocabulary through primary school. There comes a point in middle school, though, when we are finally taught the parts of speech--nouns and verbs, how to diagram a sentence, etc. At the time we thought this unnecessary--we already knew how to read and speak--so what's the point? Learning the parts of speech and how words go together to form sentences is especially important if we try to learn another language when we are older. To advance to learn another language, or to use our native tongue properly, in all circumstances, we go back to basics and learn the rules.

Most of us came to bird watching the same way. We started slowly at first, perhaps at a home bird feeder. Then we moved farther afield and added more species. But there were always a few birds that escaped our attempts to put a name on them. Perhaps it is those streaky sparrows that give us trouble, or female ducks, or immature gulls. Like language, in order to advance in birding, we need to go back and learn the basics. We don't need to memorize more field marks (build a bigger birding list or "vocabulary")--we need to learn how to look at birds and how they are put together.

Advanced Birding, 2011 by Kenn Kaufman.
Birding Essentials, 2007 by Jonathan Alderfer and Jon L. Dunn.
Birding Basics, 2002 by David Sibley.

The books above are quite similar, all excellent, and all serve the same general purpose... to teach us how to advance in our bird spotting and identification skills. But notice that "advanced" to these authors is synonymous with understanding the "essentials" and the "basics" of identifying birds.

For argument's sake, let's define an "advanced birder" as one who can quickly and accurately identify nearly every bird seen... near or distant, well-studied or barely glimpsed, or even heard-only. (There are, of course, some individual birds that even experts can't name after extensive study, but we're not talking about those right now.)

Identifying nearly every bird you can see is not about memorizing some secret and subtle field mark. First and foremost, it is about learning the basics of how to look at birds and "understanding what you see and hear," as is the subtitle of Kaufman's book.

Like a toddler learning the parts of the face, a birder needs to intimately understand the parts of a bird, including feather groupings and names. These are often called "topology" in the introduction of many field guides. As Kaufman says, "understanding the visible structure of the bird may do more than anything else to enhance your skill at identification."


   

Saturday, October 29, 2011

Best North American field guide... again!

There are 3 worthy North American field guides. But the one I carry with me on trips, the one I turn to first, has been updated to compete strongly with the others. Yes, with its 2011 printing, Jon L. Dunn and Jonathan Alderfer did it again with the National Geographic Field Guide to the Birds of North America, now in its 6th Edition!

The back cover advertises: "America's #1 Bird Guide Just Got Even Better!". While I don't necessarily agree with the grammar, I agree with the thought.

You may argue that The Sibley Guide to Birds is your favorite. Fine. That was an amazing book when it first came out, and is still a strong contender. The songbirds shown in flight in that book still haven't been matched by any other guide. But when Sibley's guide first hit the market in 2000, the National Geo was in its 3rd Edition with just over 800 species shown, matching the 810 in Sibley. The 5th Edition of the National Geo was a complete make-over, and this 6th Edition is also a redesign--now with 990 species (including 92 Accidentals and Extinct)!

While many of the illustrations in the National Geo are familiar through all versions of the book, this 6th edition claims 300 new art pieces in addition to all the changes in the 5th Edition! Averaging over 3 illustrations per species (as opposed to 8 for Sibley), the National Geo's bird illustrations are larger and more detailed than Sibley's. I noticed many new illustrations, including standing and close-up head views of jaegers. I notice the goatsuckers no longer have "shrunken heads" as those illustrations were re-done. Many of the warblers were re-drawn. The comparison views of the foreheads of Tundra and Trumpeter Swans are a great new ID illustration.

This new edition places helpful identification text next to the illustrations, making it similar to the arrows and text in Sibley. This seems to add almost 50% more identification text than the previous edition of this guide. Imagine having an expert write additional ID comments next to each illustration in your field guide. Wow!

Following the lead of The Stokes Field Guide to the Birds of North America the new National Geographic guide also heavily stresses field identifiable subspecies, with 59 maps showing subspecies in the main text, and an additional 37 subspecies maps in the appendix.

The subspecies are especially helpful for the white-cheeked geese, carefully delineating range and plumages of the various populations of Canada Goose and Cackling Goose--something birders really need, based on the amount of confusion I have witnessed among birders.

The maps are updated, too. The 3-color maps of the 5th Edition (breeding, winter, year-round) have been replaced with 6-colors (adding 3 different colors for migration: spring, fall, both). Hurray!

The new edition also adds more voice annotations. For instance, previous versions of the guide did not list the distinctive calls of swallows and some shorebirds (Red Knot, Surfbird, Rock Sandpiper)--it does now.

Finally! We now have a field guide that shows North American seabirds correctly and completely! It is updated with rarities and subspecies that may actually be separate species. The illustrations of wing molt in Wilson's Storm-Petrel was a nice surprise.

A new feature is a quick-find index on the front cover, and a visual index to bird families on both front and back covers. These will help newer birders find birds and learn the taxonomic sequence.

All the way around, this is a great field guide. In fact, compared to previous editions (especially the 4rd Edition or earlier), this seems like a brand new field guide to hit the market!



Related: A review of the new Stokes guide.

Wednesday, October 26, 2011

Golden-crowned Kinglet

Golden-crowned KingletGolden-crowned Kinglet, Cooper Mountain Nature Park, Beaverton, Oregon, 13 October 2011 by Greg Gillson.

 

On a recent slow drive with my window down I heard numerous Golden-crowned Kinglets in the lowland woods. Although some birds will remain through the winter in the snow-covered mountains where they breed, most move down-slope or southward for winter.

The photo above was taken on a recent cloudy morning at the nearby nature park. These low-light weather conditions will be frequent through the winter in western Oregon, where I live. At 1/30th of a second, hand-held, 400mm, and 800 ISO, it is amazing I got even one good photo of this energetic little bird. So I'll probably add a flash to my camera for my photo outings for the next few months. Birds look more realistic and three-dimensional with natural light. But without flash my bird photography would be very sparse from late October into April.

Earlier this year I posted a more in-depth article on Golden-crowned Kinglets.

Friday, October 21, 2011

Heermann's Gull

Heermann's GullHeermann's Gull, Seaside, Oregon, 6 August 2011 by Greg Gillson.

 

Over 90% of the world's population of Heermann's Gulls nests on Isla Riza in the Gulf of California, Mexico. After the nesting season concludes, Heermann's Gulls join Brown Pelicans moving north into the productive waters of the California Current, as far north as British Columbia. They are often seen feeding together, the gulls stealing food from the pelicans.

The eBird frequency chart (below, click for larger view) shows that a major movement of Heermann's Gulls on the Oregon and Washington coasts begin the first week in July. They are most widespread the first week of August and remain common through October. By the end of November, most are gone.



While Grant in his 1986 book "Gulls" says that Heermann's attains adult plumage in the 3rd year, Sibley indicates that Heermann's may take 4 years to become an adult. Indeed, I believe the bird above is in third summer plumage. The primaries and tail are worn but apparently not in adult plumage, the body plumage does have an adult-like aspect. This bird will likely undergo a full molt into adult non-breeding plumage before it heads back to Baja in November.