I didn’t say tinamous and ducks fall in the same category. I said that it makes sense for ground foragers(most flightless birds) and water fowl(anatids) to be m

I didn’t say tinamous and ducks fall in the same category. I said that it makes sense for ground foragers(most flightless birds) and water fowl(anatids) to be more picky with their mate selection due to the easier access to resources. Birds copulating in flight are not resisting and simply cannot due to their dynamics. Where did you get information about loon, penguin and turkeys and their respective penii? They are not adjacent classes as chicken and geese(which was what I was talking about..).