Hi
We live in a little village in South Wales and we normally have hundreds of crows all over the place.
Over the last week or so they have all seemed to disappear, is there a logical reason for this?
Regards
Chris
Your crows are probably rooks. Rooks normally form large flocks but crows only form flocks when they are juveniles having left the nest. It is normal also for rooks to occupy a rookery for some years and then just move away without any reason discernable by humans.