Kenn Kaufman's ID Tips Archives

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Identify Long-tailed Duck with these tips

Learn how to distinguish this small diving duck in its distinct winter and summer plumages.

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Long-tailed Duck, winter male. March in Ocean County, New Jersey. Photo by Brian E. Small

By Kenn Kaufman, Brian E. Small
Updated November 9, 2021

Use this advice to distinguish Eastern Bluebirds from Mountain and Western.

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By Kenn Kaufman, Brian E. Small
Published September 14, 2021

Use this advice to distinguish North America’s smallest plover from its similar-looking relatives.

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By Kenn Kaufman, Brian E. Small
Published May 7, 2021

Eastern and Western Wood-Pewees divide the lower 48 states almost in half. Here’s how to distinguish between the two and other related species.

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By Kenn Kaufman, Brian E. Small
Published April 16, 2021

Use this advice from Kenn Kaufman to distinguish Virginia Rail from two similar species.

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By Kenn Kaufman, Brian E. Small
Published January 12, 2021

Distinguish Townsend’s Solitaire from visually similar species, Northern Mockingbird and Mountain Bluebird.

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By Kenn Kaufman, Brian E. Small
Published November 8, 2020

Use these tips to identify species from the Sunshine State.

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By Kenn Kaufman, Brian E. Small
Published November 8, 2020

Use these tips and photos to distinguish between these two similar cormorant species.

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By Kenn Kaufman, Brian E. Small
Published November 8, 2020

Use these tips to classify one of the most widespread and least ornate duck species in the world.

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By Kenn Kaufman, Brian E. Small
Published November 8, 2020

Female and young male King Eiders are known to mix in with large flocks of Commons in winter, creating a challenge for birders.

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