
Keeping Track of These Boreal Nomads Is Notoriously Difficult
The irregular irruptions of winter finches inspire both delight and bewilderment among migration scientists.
Adult male. Photo: Michael Klotz/Flickr (CC BY-NC-2.0)
Coccothraustes vespertinus
Conservation status | Extended its breeding range eastward during the late 19th century and early 20th century. In recent decades, eastern population has declined again, but reasons are poorly understood. |
---|---|
Family | Finches |
Habitat | Conifer forests; in winter, box elders and other maples, also fruiting shrubs. Breeds in coniferous and mixed forests; often associated with spruce and fir in northern forest, with pines in western mountains. In migration and winter, may be equally common in deciduous groves in woodlands and semi-open country. |
Forages mostly in trees and shrubs, sometimes on ground. Except when nesting, usually forages in flocks.
3-4, sometimes 2-5. Pale blue to blue-green, blotched with brown, gray, purple. Incubation is by female only, about 11-14 days. Male may feed female during incubation. Young: Both parents feed the nestlings. Young leave the nest about 2 weeks after hatching. 1 or 2 broods per year.
Both parents feed the nestlings. Young leave the nest about 2 weeks after hatching. 1 or 2 broods per year.
Mostly seeds, some berries and insects. Seeds make up majority of diet, especially seeds of box elder, ash, maple, locust, and other trees. Also feeds on buds of deciduous trees, berries, small fruits, weed seeds. Will feed on oozing maple sap. Eats some insects in summer. At bird feeders, very fond of sunflower seeds. Will eat fine gravel for minerals and salts. Huge bill allows it to crack large seeds with ease.
In courtship, male "dances" with head and tail raised, wings drooped and vibrating, as he swivels back and forth. Male frequently feeds female. In another courtship display, both members of a pair may bow alternately. Nest: Usual site is on horizontal branch (often well out from trunk) or in vertical fork of tree. Height varies, usually 20-60' above ground, can be 10-100' up. Nest (built by female) is a rather loosely made cup of twigs, lined with fine grass, moss, rootlets, pine needles.
Audubon’s scientists have used 140 million bird observations and sophisticated climate models to project how climate change will affect this bird’s range in the future.
Zoom in to see how this species’s current range will shift, expand, and contract under increased global temperatures.
Choose a temperature scenario below to see which threats will affect this species as warming increases. The same climate change-driven threats that put birds at risk will affect other wildlife and people, too.
The irregular irruptions of winter finches inspire both delight and bewilderment among migration scientists.
Across the country, birders are being treated to one of the biggest irruption years of boreal birds in recent memory.
In this month's Ask Kenn!, bird expert Kenn Kaufman shares the surprising origins of the finch's moniker. Plus, why your feeder birds fight so much.
Let us send you the latest in bird and conservation news.
Visit your local Audubon center, join a chapter, or help save birds with your state program.
Membership benefits include one year of Audubon magazine and the latest on birds and their habitats. Your support helps secure a future for birds at risk.
Our email newsletter shares the latest programs and initiatives.