114 BIRDS OF THE REPUBLIC OF PANAMA — PART 2 



extending more broadly back over the ear coverts ; outer webs of 

 outer secondaries somewhat brighter brown ; outer tail feathers black 

 tipped broadly with white; under surface, including under wing 

 coverts, in some very pale buff, slightly darker on sides and under tail 

 coverts, in others darker, varying to cinnamon-buff. 



Immature, like the adults, but with tail feathers grayer, and the 

 white tips less clearly marked; alula, wing coverts, and outer webs of 

 outer secondaries edged with buff. 



A female taken at Ensenado Venado, Los Santos, February 25, 

 1957, had the iris dark brown ; edge of the eyelids honey yellow ; rest 

 of bare skin around eye dull greenish gray; maxilla dull black; tip 

 of mandible neutral gray, rest bright yellow ; tarsus and toes neutral 

 gray, the scutes outlined in grayish white ; claws fuscous-brown. 



Other females examined had the iris dark reddish brown. In one 

 the edge of the eyelid was broadly orange-yellow, shading outwardly 

 from the eye to dull green, with the yellow mandible changing to 

 orange on the base of the gonys. 



Measurements. — Males (8 specimens from Costa Rica and Pa- 

 nama), wing 128.5-143.3 (136.5), tail 148.0-162.0 (155.1), culmen 

 from base 28.7-32.6 (30.5), tarsus 29.0-30.3 (29.7) mm. 



Females (12 from Costa Rica and Panama), wing 128.3-138.5 

 (133.1), tail 143.0-160.0 (150.2), culmen from base 28.0-32.1 (30.3), 

 tarsus 28.1-30.0 (29.3) mm. 



Resident. Found locally in the Tropical Zone of the Pacific slope 

 of western Panama. Recorded from Chiriqui (Puerto Armuelles, 

 Alanje, Buena Vista) ; Veraguas (Rio de Jesus) ; Los Santos (Pe- 

 dasi, Ensenado Venado, Guanico Arriba), Code (Nata, Aguadulce). 

 Isla Brincanco ; Isla Parida; Isla Bolanos; Isla Cebaco (sight record). 



Mrs. Sturgis (Birds Panama Canal Zone, 1928, pp. 205-206) lists 

 two sight records for Quarry Heights, Canal Zone, and Punta Paitilla, 

 Panama. 



This interesting cuckoo ranges from the borders of the mangroves 

 near the coast to thickets and stands of taller trees in inland groves. 

 The birds move slowly, pausing long to peer about. As usually they 

 are silent, they attract little attention. I have not heard them call in 

 Panama, but in another race in the Greater Antilles with which I 

 am familiar the notes are guttural, uttered slowly, and rather sono- 

 rously, like those of the yellow-billed cuckoo of the north. Usually 

 they are found near water, though the common name of mangrove 

 cuckoo is a misnomer, as I have found them inland more than in the 

 coastal swamps. Nesting may be irregular. A female taken May 22, 



