In such cases, a female copulates with multiple males, lays a single clutch of eggs in a nest and gets her male partners to assist cooperatively in rearing the chicks. Pretty good deal.

Nests are generally thought of as a bird’s home, but it is more appropriate to consider them a nursery for raising baby birds. S.K. Winnicki, a Ph.D. candidate in avian evolutionary ecology at ...

Once a nest site is selected, the male bird occupies it and emits a different call, known as a nest coo. When the female begins emitting her own nest coo, indicating that she is ready to build a ...

When a female cowbird is ready to have a baby, she’ll stake out another bird’s nest, wait until the coast is clear, then slip in, stealthily lay her egg and leave it behind for another family ...

After the female bird mates with the male, she heads to a safe place to build her nest. Unlike many other bird species, the female Allen’s hummingbird builds her nest and cares for her young on ...

If there's a more beautiful nest in North America than the one constructed by the female Baltimore oriole, I have yet to see it. As described by Donald and Lillian Stokes in their "Guide to Bird ...

The female eagle from the Minnesota Department of Natural Resources popular eagle cam after she laid her first nest for that year. Eagles may have three- to five-day intervals between laying eggs.