Starlings
I heard them before I saw them, but that's typical of starlings. The dark, shiny ones are the parents, hunting for food, and feeding it to the lighter, duller ones, which are their constantly hungry youngsters. The adults get a bit stressed out, as you'll notice in the video that the photo links to. If you have PMS, turn off the sound first. ;-)
Comments
eerie sound, that.
Yes, we have them around here, but they aren't that noisy, for some reason. Don't worry, we have grackles to take up the slack.. :P