FAMILY ANATIDAE 



135 



An adult male that I shot in Paraguay had the soft parts colored 

 as follows : iris cream-buff ; nail on mandible and maxilla dark neutral 

 gray ; remainder of tip of bill dark drab gray, washed on the margin 

 with brown; spots behind nostrils, line of culmen, and central part 

 of mandibular rami, pale drab gray; band around bill in front of 

 nostrils, base of bill, and bare skin on side of head, black; caruncles 

 black at base, purplish vinaceous at tip ; tarsus and toes black. 



Fig. 23. — Muscovy duck, pato real, Cairina moschata. 



Measurements. — Males (5 from Mexico, Costa Rica, Colombia, 

 Paraguay, and northern Argentina), wing 363-404 (385), tail 182- 

 198 (191), culmen, from frontal feathering, ^.6-76.6 (69.9), tarsus 

 63.2-70.0 (66.3) mm. 



Females (5 from Mexico and Colombia), wing 293-326 (308), tail 

 142-167 (153), culmen, from frontal feathering, 52.0-59.5 (54.8), 

 tarsus 45.9-55.0 (51.2) mm. 



Resident. Fairly common locally on the Pacific slope in eastern 

 Panama (Rio La Jagua, Rio Chico, Rio Chiman, Rio Maje), and 

 Darien (Laguna de Pita, Rio Tuira, Rio Jaque) ; Isla Coiba. 



