territorial duck guarding the Doria Panphili pond island

…is what I found in the pond at Villa Doria Pamphili this afternoon, installed by some thoughtful human, allowing the many duck residents to access the extensively wooded refuge of the island (sort of Animal Estatey) – but after spending some time duck-watching it seemed that one dominant territorial duck in particular was guarding the ramp, and the likely nesting female behind him, chasing away any ducks hoping to hang out on the island.