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 ...

Some cowbirds make warblers an offer they can't refuse: Brood over my eggs, or I'll rough up your nest. Cowbirds are a parasitic species that lay eggs in the nests of other birds, called hosts, which ...

During the late spring and early summer months when birds are nesting and watching over their eggs, you're apt to spot an unwelcome avian visitor in your backyard or neighborhood. Often lurking just ...

Fleischer, Robert C. and Smith, Neal Griffith. 1992. "Giant cowbird eggs in the nests of two icterid hosts: The use of morphology and electrophoretic variants to identify individuals and species." The ...

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 ...

Thorington, K. K., Bowman, R., and Fleischer, Robert C. 2007. "Molothrus ater (Brown-headed Cowbird) lays egg in artificial nest in highlands County, Florida ...