I've seen a feral cat stalking my young birds before in spring & would've shot it if my gun were handy. There are all kinds of cats around here - I'm aware that some are just mousers, but there are those that want something more filling.
I'm sure a cat or cats have killed some of my juveniles. I could not find any digs or places any critter could get in and kill. One morning I found 14 dead most just killed and a few with their heads off but laying next to the body. I saw a black cat lurking around so I suspect that it may have been the cat. A friend of mine who has a lot of chickens said he has had cats kill his and they just go in and kill for the killing and will kill several birds at a time. I put a live trap out for several nights but didn't catch anything. I do have electric wire around the bottom of my pens to discourage the diggers and it seems to work. I have heard critters make funny sounds like they had found the wire.
Takes great short videos. Accidentally switched it to video mode last year & caught a nice 8 point walking thru.
Wish I had that video - it got scrubbed from the old PC. 
I've caught a cyclist riding thru my property before. I was shocked, then realized I needed better signage. No hunting signs just don't cut it. It was last day of shotgun deer season & we decided not to hunt that day. She rode right in front of my 'spot'. 
