Yes they absolutely will kill and eat you ducks and chickens! Especially your ducks because they like to sit out on the ground at night, they don’t roost in a coop like the chicken stew. The owl will sit there and watch until he feels safe swoop down and quickly dispatch, a duck or chicken...
Have any y’all played with the incubation temperatures and run one just a little hot and I want a little cool but just a degree or so I’ve had a little luck with that it seems like the hotter incubation temperatures gave more roosters in the cooler. Incubation temperatures gave more pullets.🤔