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Everything about Peregrine Falcon is "built for speed". From the smooth, hard texture of their feathers, to the shape of their nostrils.

Sibley Guides - Identification of North American birds and trees

Sibley Guides - Identification of North American birds and trees

Sibley Backyard Birding Postcards: 100 Postcards

Sibley Backyard Birding Postcards: 100 Postcards

The cover of the book Sibley's Birding Basics

The cover of the book Sibley's Birding Basics

Sibley's Owls of North America (available in poster format too), via Sibley Guides

Sibley's Owls of North America (available in poster format too), via Sibley Guides

The Sibley Guide to Birds, Second Edition

The Sibley Guide to Birds, Second Edition

The Sibley Birds Coloring Field Journal

The Sibley Birds Coloring Field Journal

An original painting of Eastern Screech-Owl (alert) by David Sibley in gouache on Bristol Board. Painted in 2013. Published in the Sibley Guide to Birds - Second edition.About 8 by 12 inches.

An original painting of Eastern Screech-Owl (alert) by David Sibley in gouache on Bristol Board. Painted in 2013. Published in the Sibley Guide to Birds - Second edition.About 8 by 12 inches.

The Sibley Field Guide to Birds of Eastern North America: Second Edition

The Sibley Field Guide to Birds of Eastern North America: Second Edition

The Sibley Field Guide to Birds of Western North America: Second Edition

The Sibley Field Guide to Birds of Western North America: Second Edition

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