Other forms: grackles
A grackle is a shiny black bird that is commonly found in cities and backyards in the eastern part of North America. When grackles gather in groups, their harsh calls can sound like the electric buzzing of a power line.
Grackles are larger than blackbirds and smaller than crows, with elongated beaks and legs. They appear black, but their feathers are beautifully iridescent in the sunshine, shining with blue and green. Grackles are scrappy foragers that are nearly omnivorous, and they tend to bully smaller birds away from bird feeders. Most scarecrows are actually used to frighten grackles, not crows.