264 BIRDS OF THE REPUBLIC OF PANAMA — PART 2 



gape, and center of upper throat tawny ; under parts metallic green, 

 more or less slate color on center of breast and abdomen ; center 

 of lower abdomen washed with tawny; under tail coverts mixed 

 greenish blue and dusky gray, the longer feathers tipped with white. 



Adult female, usually somewhat greener above ; the central tail 

 feathers with much longer, narrowed tip, which is white ; lateral pairs 

 tipped narrowly with white ; a broad streak behind the eye, a broader 

 one from the lores below the eye, the center of the throat and fore- 

 neck, and lower abdomen ochraceous-buff ; rest of under surface dark 

 gray, more or less bluish green on the sides ; under tail coverts more 

 extensively white. 



Immature, crown, hindneck, and lower back (sometimes all of the 

 back) tipped with cinnamon ; sides of neck and chest with indistinct 

 buffy tips. 



In a male, taken February 27, 1962, on the head of the Rio Guabal, 

 Code, the iris was very dark reddish brown ; maxilla and tip of mandi- 

 ble black ; rest of mandible deep red ; tarsus and toes dusky neutral 

 gray ; claws fuscous. 



A female shot April 12, 1949, on Cerro Azul, Panama, had the 

 iris dark brown ; maxilla black ; mandible reddish orange, becoming 

 dark brown at the extreme tip ; tarsus and toes dull brown ; claws 

 slightly darker. Another female, an adult bird in molt, taken on Cerro 

 Campana, March 12, 1951, differed in that the maxilla and tip of 

 mandible were dull brownish black, and the rest of the mandible was 

 deep rose. 



Measurements. — Males (10 from Panama), wing 58.8-63.7 (61.7), 

 tail 47.3-52.7 (50.5), culmen from base 41.8-44.9 (43.7) mm. 



Females (10 from Panama), wing 57.6-62.3 (59.9), tail 59.6-66.9 

 (63.9), culmen from base 39.6-43.0 (41.3) mm. 



The males measured, all in adult plumage, have the tail definitely 

 shorter than the females, with the attenuated tip of the middle pair of 

 rectrices short. In adult females the narrowed, slender tip of these 

 feathers is much longer, this accounting for the decidedly longer 

 measurements. 



Immature males, when they have attained full growth, differ from 

 adults, as they have these tail tips elongated and formed like those of 

 females. The length of the slender point is variable, in some as long 

 as in adult females, in some shorter. The total length of the feather 

 however equals that of females. 



Weight, 3 males, 5.53, 5.72, 6.09 grams (Hartman, Auk, 1954, p. 

 468). 



