The brightly colored male American goldfinch is especially recognizable ... It is often heard in flight, giving distinct flight calls. Polytypic (4 named ssp.; differences slight).

His flight is often described as a roller coaster ... low in the goldfinch nest because of the mostly seed diet. The American Goldfinch is one of the strictest vegetarians in the bird world.

The female American goldfinch is larger and has white undertail coverts, a wide buffy lower wing bar with very little white at the base for the flight feathers, and a pale pinkish bill.

American goldfinches are a delight to watch and listen to. The birds aren't just beautiful. They display a distinctive and ...