Tiny yellowish finch. Blackish conical bill is stout, but sharply pointed. Long wings are black with one white wingbar and large white patch at the base of the primaries. Small head. Short notched tail. Adult males have either green or black (Texas to South America) back. Regularly visits feeders. Females similar to American Goldfinch; note bill shape and color, usually more yellowish undertail coverts, less distinct wingbars, and more obvious white patch at base of primaries.