Red crossbill biology

This 2015 video from Canada is called Red Crossbills Singing and Feeding.

From the Cornell Lab of Ornithology in the USA:

A Bird Like No Other

Red Crossbills are endlessly fascinating: they have a can opener for a beak, they “speak” at least 10 different dialects, and they sometimes abruptly leave their home forests to travel hundreds of miles away. In a newly revised Birds of North America account, crossbill experts compile decades of first-hand knowledge to present an authoritative picture of this captivating bird—including first-of-their kind maps of call types and irruption movements that were a decade in the making.

Explore Red Crossbill biology in depth with free access all month to this groundbreaking Birds of North America account.

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