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Discoverer of the Cassia Crossbills of Idaho | Birding interview

September 9, 2026

[Posted by Chuck Almdale]

This is a very interesting interview with the discoverer of the Cassia Crossbill in 1996, a new species and endemic to Idaho. Benkman is the author of Crossbills & Conifers: One Million Years of Adaptation and Coevolution.

A Birding Interview with Craig Benkman

By Noah Stryker | 2Sep 2026 | Birding Magazine
Noah Stryker was the American Birding Association’s 2004 Young Birder of the Year for 14- to 18-year-olds, has been an Associate Editor for Birding Magazine since 2006, and in 2015 set the World Big Year record with 6,042 species, now chronicled in his book Birding Without Borders.

The Cassia Crossbill, which Craig Benkman discovered in Idaho’s South Hills and Albion Mountains in 1996, was recognized as a nova avis, a “new bird,” in 2017—and has been a goldmine for coevolution research. In this image from June 2017, a handsome South Hills male shows off his defining feature—a deep, thick, crisscrossed bill well-suited to prying seeds from tough lodgepole pine cones. Photo by Craig Benkman.

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