Actually.....many predators can and will hunt during the daytime too.YES!!!
Stupid stupid possums!
That's how I lost my ridiculously priced sexed silkies from My Pet Chicken, and all the Blue Isbars I hatched (which those eggs weren't cheap either!!!)
I was closing the door to my run but leaving the coop door inside open thinking it was secure, but there was a slight opening where the bird netting met the fence and he was squeezing in.
A HUGE one was going in my meat turkey pen last Fall before I put the bird netting on the top (my turkeys were way too fat to fly the 7ft out). I watched him go in there, he's run right up the side of the fence and go down. He wouldn't mess with the turkeys as they were too big, but he would sit there and eat their food. My husband was away with the Army & he sent me out there with a shovel in the middle of the nigh to kill him (which I couldn't do). He seemed totally domesticated too living in town. Didn't try to run or hiss or play dead when I was right up next to him. I thought he was going to start rubbing up on my leg to be pet like a cat. DH took care of him when he came home a couple weeks later...
My main predators are hawks, followed by the possum. If they lost the sitting chicken during the day it would have more likely been a hawk, but I didn't think they would go in a nest box like that? Possum only come out at night. My possum ate my birds thoroughly, but they were still young. The hawks possibly got scared off, but they mainly ripped heads off or ripped the bodies and left them, didn't really eat them or carry them off. Not sure if that's the normal? I know it was hawks though because I caught them each time. Racoons are another one that will kill chickens too, and usually bigger than possums. Once again, they only hunt at night though.
They just try to not be noticed when they move around during the day.
We had a young Great Horned owl actually come into the pigeon loft
and had himself quite a feast on my pigeons. DH cam home to find the
owl and carnage all about. According to DH, he and that owl exercised
each other for nearly an hour before the owl allowed himself to be netted
so DH could get it outside for release. All this was during the prime daylight
hours of the afternoon. I have seen racoons and possums during the day but
that is a rare thing. We have had possums in the coop before......mostly they
just ate the eggs and did not bother the hens but we do have large fowl
breeds and not the smaller ones. We did loose 3 adult geese hens to a possum.
Apparently it had staked out an area as it's territory and it was where the geese
would settle for the night so it killed them.....1 every few days.......we had a hard
time finding that possum but finally did. It was encouraged to relocate.