You think that's bad? They have a 3% fertility rate. That sounds small until you realize that means their population doubles every 24 years.
When you hear that the white population is "declining" realize that it's not declining. It's that we're not reproducing as fast as third world invaders. Their survival strategy is just like the cuckoo bird's.
Most avian brood parasites have very short egg incubation periods and rapid nestling growth ... Some adult parasitic cuckoos completely destroy the host's clutch if they reject the cuckoo egg. In this case, raising the cuckoo chick is less of a cost than the alternative, total clutch destruction.
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