If YOUR actions as the pilot cause the animals to move, you are too close. This is one of the biggest arguments and why we cannot fly in National Parks (USA)
I would have to say if these animals are moving because of the DRONE then you are too close to them. I would not disturb their peace. This is were the people pick up on the negative and bash us drone flyers.
I think he was fine for a minute there but after getting comfortable the operator got too close. I'm thinking if you are herding them with your bird you are too close. My .02
Those deerin the Stately home grounds aren't really wild and get remarkably bomb proof as they see visitors in large numbers through summer doing all kinds of strange things.
Not defending going so close though, they did almost playfully pretend to be a bit scared of it - and it looks bad even disturbing them slightly.
They will survive m0j0 but apart from the animal welfare concern, it invites stricter regulation in future which even 'unconcerned about wildlife' pilots will have a vested interest in.
Yep, looked possibly 'allowable' to start but when he started herding them that just crossed the line. The sad thing is that he can't see he's done anything much to cross that line.