4 MODIFICATIONS OF THE DIGESTIVE ORGANS. 



Fig. 98, somewhat funnel-shaped. The intestine of the Hawks 

 and Owls is generally rather short and of moderate width ; but 

 in the Kingsfishers, very long and excessively attenuated. In 



Fig. 99. Fig. 100. Fig. 101. 



Goatsucker. 



the Hawks, the coeca are reduced to the minimum size ; in the 

 Owls they are very large, oblong, and narrowed at the base ; 

 while in the Kingsfishers they are entirely wanting. 



In the Cuckoos, Fig. .99, the oesophagus is somewhat fun- 

 nel-shaped, as in the Kingsfishers, and still more so in the 

 Goatsuckers, Fig. 100. In these birds the stomach however is 

 considerably more muscular, especially in the latter, and its 

 inner coat is a distinct cuticular lining, often soft in the Cuc- 

 koos, but in the Goatsuckers dense or horny and longitudinally 

 rugous. In both families the intestine is short and wide ; in 

 both the coeca are large, as in the Owls ; and the cloaca glo- 

 bular. In the Jays, Fig. 101, and in the Crows and Starlings, 



