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Cuckoos are medium-sized birds that range in size from the little bronze cuckoo , at 17 g and 15 " cm ( 6 " inches ) , to the channel-billed cuckoo , at 630 g ( 1.4 " lbs ) and 63 " cm ( 25 " inches ) .
 little bronze cuckoo, channel-billed cuckoo
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Answer:
 little bronze cuckoo, channel-billed cuckoo