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🔶 🔶 I will be away from the studio and out birding from Friday May 28 to Sunday Jun 13. Any orders received during that time will be shipped after I return on the 13th.
Thanks for your support and patience. Stay healthy and keep birding!

Bird Identification

Distinguishing subspecies of Sandhill Crane

Here’s a new illustration I’ve done as part of some work on distinguishing the two subspecies groups of Sandhill Crane. Six subspecies of Sandhill Crane are generally recognized, but for field observers it’s more practical to assign birds to two subspecies groups: Lesser and Greater. The Greater subspecies group includes five of the named subspecies, …

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Variation in Pine Siskins and the so-called “green morph”

Pine Siskins – streaky relatives of goldfinches – are so distinctive as a species that we tend to overlook their considerable individual variation. Siskins are unusual among the small finches in that males and females look nearly identical. Subtle individual differences in the amount or intensity of streaking, or in overall color, have no bearing …

Variation in Pine Siskins and the so-called “green morph” Read More »

A Cerulean-like song variant of Black-throated Blue Warbler

This recording includes one song of Cerulean Warbler and one of Black-throated Blue Warbler. Can you tell them apart? Distinguishing Black-throated Blue Warbler and Cerulean Warbler by song is usually not too difficult, even though both have buzzy songs with a more or less rising trend. The typical songs of both species are distinctive, and …

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The head shape of Herring Gulls seems to change seasonally

sketch of gull head shapes

I always enjoy studying Herring Gulls, just looking at variation and trying to categorize the birds into age, sex, and regional groups. Last winter I was watching the gull flock at Turners Falls, MA, paying special attention to when the adults molted into breeding plumage. My thought was that the early-molting birds would be from …

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Announcing Song Sleuth

I’m very excited to be able to announce the long-awaited launch of a new app – Song Sleuth – created by Wildlife Acoustics, Inc. It’s a bird song identification assistant, just a couple of taps and your iPhone will suggest what species of bird is singing. It covers nearly 200 of the most frequently heard …

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