My usual massive flocks of Starlings, Sparrows and Grackles are gone
Robins are okay but the Wrens, Mockingbirds and Catbirds are rare.
Haven’t see a Thrush in ages.
Somebody’s doing something evil, somewhere.
/probably those damn bird blenders
I would think that the massive flocks would be more vulnerable to the turbines. The others probably stick close to forests. You should have resident catbirds, and mockingbirds. Wrens don’t migrate. I would suspect something closer to home. Where’s the nearest wind farm?