@22Ryu - I tend to agree, though the mangaka seems to think otherwise. My wife feeds a flock of little birds, so we regularly see various kinds of hawks coming by to serve themselves at the buffet she has so nicely set out for them.
... @22Ryu :
there are case in Japan, where bunch of crow kill and eat a stray cat ...
that really shocking and frightening people on there ...
and about "Cat Chirping" ...
it's stress from cat if they can't catch their prey ...
(the target at high place, obstacled by glass / window, being hold by us, moving at high speed, etc)