CLASS II. AVES: ORDEE 3. SCANSORES. 
209 
THE YELLOW-BILLED CUCKOO. 
to tliis, for it often leaves its young to be reared by otber birds. The eggs are two to four, and 
of a blnisb-green color, usually very pale. It has a frequent cry of hou^ kou, Jcou, whence it is 
called Coio-Bird; as these notes are supposed to be uttered most frequently before a storm, it 
is also called Rain-Crow. It is a curious fact that no less than four specimens of this bird have 
been seen in England, where it is not indigenous ; it is supposed they must have migrated across 
the Atlantic. 
THE BLACK-BILLED CUCKOO. 
The Black-billed Cuckoo, C. erythrophthalmus^ is twelve and a half inches long, and resem- 
bles the preceding in appearance and habits ; it is also distributed through the same regions. It 
is less shy, however, and its note is something like worrattotoo ; the eggs, three to five, are a 
bluish-green. This is the St. Domingo Cuckoo of Nuttall. 
Vol. II.— 2 V 
