It depends, if they can sneak off into underbrush, then a coyote, fox, skunk, cat, or dog will easily be able to snatch them secretly.
If you can keep them around you and don't let them wander off (like you're in a netted garden) then I would mostly worry about a hawk.
If you can keep them around you and don't let them wander off (like you're in a netted garden) then I would mostly worry about a hawk.