Black birds with a greenish sheen and brown heads sometimes visit my yard during spring migration. These are male brown-headed cowbirds, and they often arrive in mixed flocks of red-winged blackbirds ...
One of the most interesting topics discussed in my Ornithology class was about the “con artists” found in nature… Brood parasitism occurs when a female bird (the parasite) lays her eggs in the nest of ...
Every spring I get reports from astonished readers describing a small bird feeding a much larger, obviously begging chick. Can you explain this, readers ask. The answer is “brood parasitism.” ...
It’s that time of year here in our neck of Pennsylvania when it’s prime nesting season for our feathered friends. Case in point: Our home in Northbrook is now surrounded by nesting birds. These ...
It’s that time of year here in our neck of Pennsylvania when it’s prime nesting season for our feathered friends. Case in point: Our home in Northbrook is now surrounded by nesting birds. These ...
Today’s comment of the day comes directly from a bird’s worst nightmare. In response to today’s post on the nesting habits of brood parasite, the cuckoo finch, commenter Aloicious shares this even ...
Since the 1960s, biologists have made fake eggs for some studies of bird behavior. But Mark Hauber of Hunter College in New York says this kind of scientific handicraft is not exactly his forte. "With ...
Thorington, K. K., Bowman, R., and Fleischer, Robert C. 2007. "Molothrus ater (Brown-headed Cowbird) lays egg in artificial nest in highlands County, Florida ...
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