How a winter irruption of white-winged crossbills in the Adirondacks sparked a lifelong passion for birdwatching.

Polytypic. Length 6.3". The 12 subspecies show marked variation and fall into 5 major groups: “white-winged” (1 ssp.), “Slate-colored” (2 subtle ssp., plus cismontanus), “Oregon” (5 ...

Flocks of these doves, with large white wing patches, and short square-ended tails, are a common sight in summer in many areas near the Mexican border. Polytypic. Length 11". A little larger than ...