European starlings (Sturnus vulgaris) are famous for their ability to fly in tight formation. When under attack by a peregrine falcon, they evade him in amazing ways.
Starlings under pressure fly closer together and shape-shift the flock like a giant blob in the sky. This makes it hard for the peregrine to choose a single bird as prey and gives their flocks a special name, a murmuration.
This winter Chad+Chris Saladin have been filming murmurations in Lorain, Ohio. Above on 30 December 2018, below on Christmas Day.
Whenever there’s a peregrine, the starlings murmur.
Bonus! Here’s a Facebook album by Chad+Chris with closeups of a peregrine hunting starlings. (click on the “See More” link embedded in the Facebook post)