go BIRDS OF THE REPUBLIC OF PANAMA PART 3 



An egg that I have seen in the British Museum (Natural History) 

 from Irazu, Costa Rica, collected June 3, 1900 (collector not in- 

 dicated), is dull white, without luster, and long elliptical in form. It 

 measures 29.8 X 21 . 1 mm. 



In observations in the Costa Rican mountains, Skutch ( Pac. Coast 

 Avif. no. 35. 1969, pp. 385-391) found them in pairs through the 

 year. They sleep singly in holes in trees, retiring late at night, and 

 are out at dawn. Nests that he found were in natural cavities or 

 crevices in tree trunks, or, in one instance, in an old nest hole made 

 by a barbet. The two white eggs were placed on fragments of hard, 

 thin bark. The pair share incubation and the care of the young. In 

 returning to the nest they often brought additional bits of bark to 

 add to the lining, and also often threw out bits of that already present. 

 The newly hatched young had an abundant covering of dark gray 

 down. They appeared to have one brood each year. 



CAMPYLORHAMPHUS TROCHILIROSTRIS BREVIPENNIS 

 Griscom: Red-billed Scythebill, Trepador Pico de Garfio 



Figure 5 



Campylorhamphns trochilirostris brevipennis Griscom, Bull. Mus. Comp. Zoo!., 

 vol. 72, January 1932, p. 348. (Lion Hill, Canal Zone, Panama.) 



Bill long, strongly curved, light reddish brown ; back, wings, and 

 tail russet brown. 



Description. — Length 220-240 mm ; bill long, slender, strongly 

 decurved. Adult (sexes alike), crown blackish brown, each feather 

 with a central streak of dull buff; hindneck browner, also strongly 

 streaked with buff; back russet brown, usually lined narrowly with 

 buff ; rump and upper tail coverts ruf escent brown ; wings, including 

 coverts, and tail chestnut, tips of the primaries slightly dusky; sides 

 of head and neck streaked with dull buff; chin and throat white to 

 dull buff, the feathers edged with sepia-brown producing prominent 

 light streaks ; foreneck and breast light reddish brown, lined with 

 dull buff to buffy white ; abdomen, flanks, and under tail coverts 

 somewhat brighter brown, without streaks ; under wing coverts and 

 under side of wings cinnamon. 



A female taken at Mandinga, San Bias, February 15, 1957, had 

 the iris wood brown ; bill light reddish brown, slightly paler on the 

 gonys ; tarsus and toes greenish gray ; claws light reddish brown. 



Measurements. — Males (10 from Code, Canal Zone, San Bias, 

 Darien, and northern Colombia), wing 91.2-98.2 (93.7), tail 74.2- 



