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Popular cuckoo (Cuculus canorus bangsi) egg (left) as opposed with eggs of the Moussier's redstart (Phoenicurus moussieri) Because the frequent cuckoo evolves to lay eggs that much better imitate the host's eggs, the host species adapts and is much more able to differentiate the cuckoo egg. A review of 248 frequent cuckoo and host eggs shown that female cuckoos that parasitised widespread redstart nests laid eggs that matched a lot better than those who qualified dunnocks. Spectroscopy was accustomed to product how the host species saw the cuckoo eggs. Cuckoo