Thus, adult zebra finches retain the ability to adjust their vocal output, but differ from juveniles in that they do not seem to change their internal song model based on auditory input.

Discover 7 types of finch birds to look for in winter. The difference between these birds becomes clear when you compare the ...

I am seeing just a few purple finches at the feeders now. Last year, over a dozen were here on many days in January. Some may migrate to the south […] ...

Common and hoary redpolls are 2 closely related finches of the boreal forest and ... Immature: first-year birds resemble an adult female, but they tend to be buffier. Juvenile: brown and streaked ...

House finches, such as this adult male, can be common visitors to hummingbird feeders. By Gary Phillips For The Sun News The bird-breeding season continues in our area, although some species are ...