PIGMY ANTWREN 



Dr. Alfred 0. Gross discovered a nest of this 

 antvireo on Barro Colorado Island on July 

 6, 1925. "The male and female relieved each 

 other at regular intervals of two or three hours 

 throughout the day. The birds approached the 

 nesting tree walking on the ground rather than 

 flying from the branches above. Just before 

 the shift I could hear the approaching bird 

 singing a sweet warbling song." (Gross.) 



6. Myrmotherula brachyura (Herrmann) 

 Pigmy Antwren 



Myrmotherula pygmaa RIDGWAY, Birds of N. and M. 

 Amer., V, p. 64, 1911; STONE, Proc. Phila. Acad. Nat. 

 Sci., 1918, p. 260. 



Length 65 mm. (2.55 in.); tail 16 mm. (0.60 

 in.), (one specimen). 



Male. Head and back black streaked with 

 whitish, rump gray; two conspicuous wing bands 

 of yellowish white; sides of head yellowish buff; 

 a streak of black in continuation of eye and one 

 through the cheek; chin and throat white; re- 

 mainder of under parts palest yellow. 



Female. Resembling male but top of head 

 streaked with tawny; throat tinged with pale 

 tawny. 



Extremely small; no crest. Differs from male 

 of following species in being unstreaked below. 

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