I don't mean to hijack this thread, but it did catch my attention because I've lost two small chicks recently, and also with no sign of anything. The first was last week, and then again last night. They are confined to the coop/run and the place is very secure. The only things which could possibly get in are rats and snakes, and then only if it's a small size of rat or snake. I'm leaning towards rats because I have seen a few about, so tonight I will be setting traps and drowning them will take place in the morning.
My one question is, would a rat eat a 2 day old chick and leave absolutely no trace of it at all, or does it sound more like the work of a snake? We do get rat snakes, cobras, and vipers visiting the property from time to time, but apart from the vipers, the others we've seen were far too big to get into the run.
Thanks in advance for any advice.
BTW....to the OP, you need to keep your birds confined until the critter taking them has been sent to meet its maker.