COCCYZUS.
No crest ; nostrils narrow ; bill narrower than in " Cuculus " or " Clamator." Coccyzus americanus americanus (L.). YELLOW BILLED CUCKOO.
g ? Above brown, reddish on primaries ; beneath white ; bare skin round eye grey (in young yellow). Bill above dark horn, with yellow cutting edge towards base, below yellow with black tip. Legs and feet dark grey. Wing d 138-156, ? 137-15o. Tarsus 22-27. Bin from skull 28-30 (W.).
An American species which has occurred on several occasions in Britain and W. Europe.
Coccyzus erythrophthalmus (Wilson). BLACK-BILLED CUCKOO.
,s Above brown ; beneath white tinged buff ; skin round eye red (yellow in young). Bill above blue grey, darker at tip, below black. Legs and feet bluish grey. Wing g 135-143, ? 137-15o. Tarsus 23-25. Bill from skull 26-29 (W.).
Another American species of very rare occurrence in Europe. Has occurred Ireland, Italy, Azores.