Some ornithologists would say the cuckoos are the most superior birds simply because they are smart enough to get other birds to do the arduous job of rearing their young.
Cowbirds do that, too. Three years ago, the starlings that nest under my neighbor's steps had a baby cowbird pop out, which they continued to feed. Been little starlings the last two years.
@Beowulfsfriend Interesting would be a marvel if they were genetically linked. I have read that cuckoos can use up to 90%of their brain power, how this is determined I have no idea.
If they were NHL teams I like neither the Ducks nor the Penguins.
@creative51 NOT!!!