Birds see dogs as the ghosts of wolves; half-hunters with no kill-bite behind the growl.
kill-bite, that way the wild ones know, to take a neck between deft jaws and break it, quick.

Ground means danger, height means safe, water means safe.

Safe from ghost-wolves, from half-knowledge cats who think they are still kittens and know how to catch but not how to kill-bite.
Leaving brothers and sisters torn and useless. Unable to find mates, make nests, unable to multiply bird-nation.