On Tuesday, November 20, 2018 at 7:41:00 AM UTC-8, Tango Whisky wrote:
Le mardi 20 novembre 2018 15:23:20 UTC+1, Martin Gregorie a écritÂ*:
ion as you and don't cause problems if you join them.

I have a theory that birds that normally soar in groups (gulls, kites,
storks etc) are less likely to hit you while the more solitary hunters
don't really know how to gaggle without having near misses and
collisions. But, what do I know. Can anybody confirm or deny this idea?

Prey birds have a natural interest not to be hit by bigger wings, whereas raptors don't care that much because the have no natural enemies in the air.