Depends which deer.
Roe and Red are native. From a birdwatching perspective humans are self-introduced, so that's fine.
(
Colonel Boris "...a desperate Buzzfeed imitation...",
Thu 7 Mar 2013, 15:24,
archived)
Reds are mostly hybridised with imported Sika deer
and the fact that we've managed to kill off all the wolves and bears also means they don't have any natural predators anyway
(
emvee cruor deo cruoris,
Thu 7 Mar 2013, 15:32,
archived)
I didn't know that
I'm surprised it's true in the Highlands, but apparently so, at least on the mainland.
(
Wasp Box like a nervous random stranger at a glory hole,
Thu 7 Mar 2013, 17:15,
archived)