A male Common Yellowthroat (right) carries food to an immature Brown-headed Cowbird in Sharon Woods
Metro Park near Columbus, Ohio. Cowbirds lay eggs in nests of other birds and leave the responsibility
for raising the baby to the other bird. That's why this very stressed Yellowthroat is carrying food
to an immature bird much larger than the adult Yellowthroat. More photos of Cowbirds are below.
Additional wildlife photos are in my Birds and Animals gallery.