A friend of mine who grows potatoes in chilliwack is having problems with birds digging up and pecking chunks out of his crop. He says he has seen about a hundred ravens (not crows) in his field. Has anyone heard of ravens in such large numbers around here? My friend is wondering if they migrate at all and might disperse before the whole field is ruined, and if there is anything he can do to discourage them from flocking there in the first place. I did some googling but I thought I would ask here too.