Grackles are hated by many as they can arrive in large flocks and caw, caw, caw you to death. The sound is that of a rusty hinge being pushed back and forth in the wind. I knew a little old lady in Florida who used to bang on a pot to get them out of her mango tree. Her neighbors thought the persistent clanging noise that she made with her kitchen utensils was worse than the birds calling to each other! Grackles are not Crows or Blackbirds but are actually related to members of the Meadowlark and Oriole family. If you do not look closely you will miss the rainbow of blues and purples that make up their dark effervescent cloak.
Yes, they chase away the songbirds, but everyone gets their place on this earth.