I too am slightly disheartened, my problem has been, my neighbour has a feral cat in her stables which she doesn't feed, so it keeps the mice down. The cat had had kittens, and she still didn't feed it so in order to feed its young it came over to me for lunch and has taken 12 ducks and 3 hens. If only my neighbour had been a bit more responsible, advised me of the kittens, and I would have put food out for them in order to save my birds. And like you I would guess 80% of what I have hatched has been cockerels