Brown Headed Cowbird

brown headed cowbird female busy laying eggs... bluebirds reject nest Fact: Brown Headed Cowbird lays her eggs in other birds' nest and lets the other birds feed her young...Some birds know that it is not their egg and they will abandon the nest or roll the egg out..Some birds don't figure it out and raise their young..The Cowbird doesn't have to build the nest or feed the young. She stays busy laying eggs summer..