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

On perched bird, wing patch shows only as a thin ... while the western birds are more solitary; bears 2 white eggs. Migration: primarily a summer resident in the United States, with most migrating ...

Upperparts are blue-gray, similar in color to the blue-gray wing edging ... but white-breasteds in the Rockies regularly move onto the Great Plains, and some northern birds disperse.