My old shop had a parrot that copied power tools nonstop. Drove me up the wall when I was trying to actually measure and focus. Funny for a visitor maybe, but brutal for getting real work done.
Has anyone else found that kind of noise actually helps them concentrate after a while? I read something once about how repeating sounds can become a steadying rhythm for your brain. I see where @rodriguez.charles is coming from with the background hum idea, turning a weird quirk into part of the shop's vibe. My friend's conure does this with his drill and now the silence feels wrong without it.