A gathering of crows is called a murder.
I wonder why. There are many explanations.
The eating of human flesh after a battle seems appropriate.
A group of rhinos – Crash.
Alligators – Congregation…a Sunday morning ritual?
Lemurs – Conspiracy….(or is that just the theory?)
Composite stitching (multiple exposure photos). Available print: https://bluemarblephotography.smugmug.com/Composites/Birdscapes/i-7zjkvJt/A