I had a tree full of them the other day!
The cow bird is mostly known for laying their eggs
in the nests of other birds so they don't have to care
for their own young. Many times the baby cow birds are
larger than their adoptive parents, like sparrows, and the
struggle is real in keeping up with the demands of feeding
a very large hungry baby along with their own little ones.
And with those brown heads and black bodies, they look
kind of evil, don't they? Tisk, tisk.