Freeloading cowbird prospers by live and let live
Cowbirds, the freeloading American blackbird born in other birds' nests, trick their foster parents into feeding them by letting their nestmates join in the begging instead of killing them,
Cowbirds, the freeloading American blackbird born in other birds' nests, trick their foster parents into feeding them by letting their nestmates join in the begging instead of killing them,