Add Yahoo as a preferred source to see more of our stories on Google. Parenting can be lots of work for a bird: all that flying back and forth transporting grubs and insects to a nest of demanding ...

ITHACA, N.Y. – Birds separated by vast geographic distances and millions of years of evolution share a remarkably similar learned vocal warning to identify parasitic enemies near their nests, an ...

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 ...

Parasitism : costs and effects / Gary A. Wobeser -- Haemoproteus / Carter T. Atkinson -- Avian malaria / Carter T. Atkinson -- Leucocytozoonosis / Donald J. Forrester and Ellis C. Greiner -- Isospora, ...