48 BIRDS OF THE REPUBLIC OF PANAMA — PART 2 



thickets, often in tall second-growth, where they ranged in pairs. They 

 were not especially wary, since hunters seldom disturbed them there, 

 so that when startled usually they flew only a few meters to perch on 

 a low branch, or walked quickly away on the ground. In this area 

 they came out in early morning on the open roads, and also appeared in 

 pasturelands, where there were only scattered thickets. On the whole 

 they did not frequent heavy forest as does the typical race of Cassin's 

 dove, but seemed to seek open habitat, more like that favored by the 

 rabiblanca, the white-fronted dove. 



The call of the male was the usual resonant, prolonged coo, some- 

 what higher in sound than that of the related species. 



Skutch (Wilson Bull., 1964, pp. 240-242), in southwestern Costa 

 Rica, found this race nesting from February to late September. The 

 nests, often more slightly built than those of the rabiblanca, usually 

 about 125 millimeters in diameter, were placed at the edge of wood- 

 land, or in second-growth thickets, hidden among vines, from 1 to 5 

 meters above the ground. The 2 glossy eggs were white, with a faint 

 tint of buff. One set measured 26.0x21.5, and 27.3 X 20.9 mm. 



LEPTOTILA CASSINII CERVINIVENTRIS (Sclater and Salvin) 



Leptoptila ccrviniventris Sclater and Salvin, Proc. Zool. Soc. London, May 

 (June 1), 1868, p. 59. (Choctum, Alta Vera Paz, Guatemala.) 



Characters. — Darker than L. c. cassinii; breast more heavily washed 

 with vinaceous ; sides browner ; dorsal surface decidedly browner. 



Measurements. — Males (4 from Bocas del Toro), wing 131.0-137.1 

 (134.3) ; tail 79.1-85.7 (81.9, average of 3), culmen 13.4-14.8 (14.2), 

 tarsus 31.8-34.7 (33.6) mm. 



Females (4 from Bocas del Toro), wing 125.0-132.9 (129.5), tail 

 77.0-82.0 (78.6, average of 2), culmen 14.2-15.5 (14.8), tarsus 32.0- 

 33.9 (33.0) mm. 



Resident. Found in the tropical lowlands of western Bocas del 

 Toro, where it is recorded from the Costa Rican boundary east around 

 the Laguna de Chiriqui to Cricamola. 



In choice of habitat this race resembles the typical form. Early col- 

 lectors around the bay shores found it common, but it seems now to 

 be reduced in number, probably through hunting, as in 1958 I noted 

 single birds on only three occasions, and did not succeed in collecting 

 specimens. 



In its full range L. c. cerviniventris, as recognized at present, is 

 found through the Caribbean lowlands north to Chiapas in southern 

 Mexico. The only specimens that I have seen from Bocas del Toro 



