Because I work at a raptor rehab. center, I feel my stories shouldn't be allowed - too many of them!
The big birds are not the problem, in my opinion. At least you can see them coming!!! It's the little ones that'll git 'ya. Chickadees are relentless! Blue Jays Bite! Mocking Birds will dive on you until you either leave or fall!!!
May I remind you though, that, as of January, breeding season has already begun for many birds such as Bald Eagles and Great Horned Owls. The rest will follow suit very shortly. Please be mindful of nests and cavities while climbing.