Try not to look like a competitive male of the same species - especially in the breeding season. Good advice for anybody!
Know where they are breeding an stay well away from the nest area.
Don't get dressed up like food!
Get out of the way if you see a bird taking interest. I think that their eyesight is about 10x better than ours, so a dedicated observer or two with binocs would be on better terms - good mitigation.
Get local advice from birders and conservation groups (mitigation).
Maybe they can't fly upwards, but I've watched peregrine falcons stoop from a great height, >500ft, and hit their prey (pigeons mostly) from beneath, then killing their speed by climbing vertically - surrounded by a plume of pigeon feathers! That would be a good way to avoid the rotors as well.