We have a 25yo male cockatiel, and he used to do this the female we had. Poor little guy had no clue how it was supposed to work, and after a moment she'd squawk angrily and bite him, then later she'd lay unfertilized eggs and he'd try to stomp them through the bottom of the cage.
I downloaded this same image off a Facebook group called science diagrams that look like shitpost to share it on lemmy but completely forgot about it. I tried uploading it in the comment but it keeps erroring out for some reason. nvm
Some dude in the comments shared a blurry image of this happening IRL and it's as funny as it looks in this diagram.