While nesting season for most birds is winding down, this is a great time to monitor American Goldfinch nests. These birds, found throughout much of the northern and eastern U.S., don't begin breeding until late June with peak nesting occurring in late July and early August.

How many times a year do goldfinches breed?

Goldfinch breeding begins in late April and most pairs will attempt two broods, sometimes three, in a given year. Each clutch consists of approximately 3 – 7 chicks whose incubation period lasts between 10 – 14 days, ultimately leading to a fledge period of between 13 – 18 days.

Do goldfinches breed in winter?

Goldfinches were somewhat less widespread in winter than during the breeding season, quitting some of their areas of lowest breeding density, including withdrawing from some of the highest altitudes. There is little difference in habitat occupation between the breeding and winter seasons.