A lone Brown-headed Cowbird picks some millet off the tray.

Thank goodness for "feeder birds", though this guy is not on my favorites. Another day with little time to shoot.

This is another invasive species in North America. They do not build nests, but rather the female lays her eggs in other birds' nests, such as Chipping Sparrow or Common Yellowthroat. The baby cowbird is tended to by the nesting bird, and often out-eats or physically pushes at least some of the native babies out of the nest.