Goldfinch Feeding Habits
These birds are easily attracted to bird feeders all year by supplying nyjer/thistle or hulled sunflower seed for them to eat.
Specially designed Thistle Feeders are required, as nyjer seed is tiny.
When feeding their young, the parents fill their crops with seeds and maybe small aphids or caterpillars and regurgitate them part by part to the young birds.
This method allows them to feed each of the young birds each time they visit the nest. In winter, the American Goldfinch form flocks and feed together with little aggression towards each other.