Scientific name: Carduelis psaltria
Lesser Goldfinches can mimic the songs of other birds, and occur in two color forms in different parts of their range. Green-backed Lesser Goldfinches are found in the west, while a black-backed form is found in eastern portions of its range.
One way to recognize a goldfinch in flight is to note its undulating flight, moving up and down rather than in a straight line. While incubating the eggs, the female goldfinch is fed by the male. This food is a mixture of regurgitated seeds, the same diet that young goldfinches are fed.