These are an appropriate size for taxoboxes if you want larger versions sing out   Also a Fantailed Cuckoo      Could it be made explicit as to whether the European common cuckoo is the only species that lays eggs in another birds nest  Thanks   Its definitely not Oriental Cuckoo Great Spotted Cuckoo and others are nest parasites but I dont have a defititive list Other birds apart from cuckoos also do this like the cowbirds     Citation   You guys may be interested to know that the introduction to this article appeared in big letters on a poster at Microsoft Researchs annual companyinternal expo event TechFest It was in reference to a paper about cuckoo hashing an algorithm called such after the cuckoos eviction of other birds   Cukoo  Hasnt it also been spelled cukoo or cookoo The way its spelled looks like kukoo