OK, presumably 'parasite' birds instinctively know the various species of birds that they can get away with the practice. Laying an egg in an osprey or eagle's nest would likely mean they'd end up as food.
Is there any definitive research on this?
Is there any definitive research on this?
I don't have research documents on hand atm, but I do have a terrifying video about them from zefrank: https://youtu.be/9TZQDA2yabg
I think I've learned more from that story on 'Bin chickens than any other HN story in quite a while, it took me down all sorts of alleys, research papers, etc.
Initially I wasn't even going to click on this story as there are so many of them on HN and I've only a casual interest in birds from the fact that I see then in my neighborhood. It's interesting really how things turn out (and how one learns things).