Don’t like crows.
They bully the smaller birds at my feeders and they vacuum up all the food.
I shoosh them away so the regular birds can eat.
Little vultures.
We had the same problem, but solved it with different feeder styles. Our remaining difficulty has been the starlings (which go beyond bullying to the outright wanton killing of our wild birds) and the English ("house") sparrows, which are about as bad.
Mr. niteowl77