Look-alikes

American Goldfinch vs Pine Siskin

In winter, drab goldfinches and streaky Pine Siskins crowd the same nyjer feeders. Streaking is the quick separator; the siskin's yellow wing flashes can confuse.

American Goldfinch — photo: Wikimedia Commons

Pine Siskin

Field mark	American Goldfinch	Pine Siskin
Body	Unstreaked; olive-brown to buffy in winter	Heavily streaked brown all over
Wings	Black with bold white or buff wing bars	Brown with thin yellow edging that flashes in flight
Bill	Conical, pinkish (breeding) or dark (winter)	Very thin, sharply pointed
Voice	"Po-ta-to-chip" flight call	Rising, buzzy "zreeeee"
Winter status	Present every winter across much of the U.S.	Irruptive — abundant some winters, absent others

Field tips

Any streaky "goldfinch" is a siskin.
Siskins are highly susceptible to Salmonella outbreaks at feeders — clean nyjer feeders weekly during irruptions.

Full species profiles

American Goldfinch

Frequently asked

Why do Pine Siskins show up some winters and not others?

Siskins are irruptive: when conifer seed crops fail in the boreal forest they move far south in large numbers.

Do goldfinches and siskins eat the same food?

Yes — both favor nyjer and hulled sunflower, and they often feed together.

Sources

Timing reflects typical patterns for the region as a whole; local dates vary with elevation and year. Check the linked eBird bar charts for your county.