While near the Raritan River the other day, I noticed a circle in the sky that was moving rapidly. The circle was actually a large group of birds. The shape kept getting formed and reformed, over and over, while the birds moved westward.
I’ve seen flocks of european starlings before, flying in patterns in the air then landing en masse before taking off again, but this was different. The birds were very high up in the sky and they did not land. The pattern the birds made remained circular until they went out of sight.
What I didn’t see right away was the raptor in their proximity. The more I watched, it seemed that the formation of the circle was a way for the flock to protect and defend themselves from the threat. Although it looked like the raptor was after the group of birds, I suppose the birds could have been harassing the raptor too (like an angry mob). I’m guessing that the birds were starlings, although it could have been some other type of bird that flies together during migration. I couldn’t identify the raptor either because it was too far away.
Linking to Skywatch Friday.