Gestation refers to live birth and the time between fertilization and birth, however in birds and most repitiles incubation time refers to the time between fertilization and hatching. In the American Goldfinch the incubation time is aproximately 11 days. Aproximately in this case means that the incubation time rarely varies by more than a day plus or minus.
American Goldfinch, not eastern. I don't know why. According to the encyclopedia the American and Eastern Goldfinch are the same species.
Yes. The Willow Goldfinch is a subspecies found west of the Rocky Mountains in the US.
A yellowbird is an alternative name for the yellow warbler, or the American goldfinch.
According to an internet search, the American Goldfinch's migration patterns favor regions where the minimum January temperature does not go below an average of 0 degrees Fahrenheit.
Probably a male American Goldfinch in breeding plumage. But I think this description could fit the males of the Evening Grosbeak, Lesser Goldfinch, Scott's Oriole, Townsend's Warbler, or even some flycatchers, depending on lighting. American Goldfinch are just the most common and widespread.
American Goldfinch was created in 1758.
Eastern Goldfinch (aka American Goldfinch)
American goldfinch, European goldfinch, lesser goldfinch, evening grosbeak, pine siskin, Lawrence's goldfinch.
Yes,,Same species.
American Goldfinch, not eastern. I don't know why. According to the encyclopedia the American and Eastern Goldfinch are the same species.
Yes. The Willow Goldfinch is a subspecies found west of the Rocky Mountains in the US.
The scientific name of the Willow Goldfinch (aka American Goldfinch) is Carduelis tristis.
no
Erwin Flewelling has written: 'Carving an American goldfinch' -- subject(s): American goldfinch, Patterns, Wood-carving
The American Goldfinch goes by the name Carduelis tristisbut it was reclassified to Spinus tristis.
canary, American goldfinch
a monster in your closet That is the American Goldfinch.