Baltimore orioles are often fighting in my backyard. The orange is located right nest to the
Hummingbird feeder therefore a given oriole can partake of either option. If a second oriole
arrives on site and accepts the unoccupied option it will be almost immediately repelled by
the oriole already there. So that an alpha male on the feeder will chase away the oriole on the orange and usurp the fruit. The rejected oriole will quite naturally relocate to the feeder only to be chased
away again, and so forth, like a dance. I've also seen two opposing males face each other about
30 cm apart and undulate their whole bodies in reciprocal fashion, again in the manner of a dance.
I'm glad that as humans we have evolved past all that nonsense because, quite frankly, I can't dance.
