1) Bird genus 2) Genus cuculus 3) Type genus of the cuculidae 
Cuculus is a genus of cuckoos which has representatives in most of the Old World, although the greatest diversity is in tropical southern and southeastern Asia. The species in taxonomic order are: Some sources also include the pallid cuckoo in this genus, although there is disagreement about appropriate classification. The hawk-cuckoos are sometim...
[n] - type genus of the Cuculidae
genus Cuculus noun type genus of the Cuculidae