It seems that the Green Oropendola is very seriously trying to mate with the male Andean Cock of the rock. It repeatedly performs a series of actions: pecking at the base of the Cock of the rock's tail feathers with its beak, then stepping on its back with its feet and mounting it
I just decided to come back to this photograph after managing to observe this behavior yesterday, did not expect to actually be able to see it with my eyes
For all you know, it'd be funny if they actually became a pair
@LeMandaiEnthusiast‧ Yes, I saw the similar picture posted by two people in other social media yesterday, it seems they are a pair now and enjoying this game very well.