Have watched them actively trying to take lambs/split lambs away from ewes through the thermal whilst out on our permissions. Also aren’t shy about getting right in amongst the sheep & definitely intelligent as will often specifically target multiples - easier to split a triplet away plus easier kill as normally smaller. Biggest problem we find is that it can be difficult finding the safe shot to actually take them without risking harm to the flock! As this is an open forum I won’t comment on any other prolific predators!!
Once had to shoot a lamp shy Renard that had gotten wise to the effective distance of a farmer's s/gun. He was accounted for in the middle of a lambing paddock whilst lying waiting right behind a ewe in the middle of birthing.. This fox was obviously an old hand and had learned wicked ways. But I only shoot problem foxes these days and am appalled by the wanten slaughter of some so called sportsmen posting pics of a mountain of fox taken out in a single night. Some are downright disrespectful of this intelligent creature. Yes I'm getting softer with age