GRAY-BREASTED MARTIN 



below plain sooty grayish brown, the thighs 

 white. 



This little swallow is easily mistaken for a 

 swift from its small size, long wings and sooty 

 coloration, though distinguished by its longer 

 tail. Seen repeatedly in the vicinity of Patillo 

 Point, Panama, in April, 1926. 



5. Progne chalybea chalybea (Gmelin) 

 Gray-breasted Martin 



Length 165" mm. (6.50 in.); tail 65 mm. 

 (2.60 in.). 



Male. Glossy dark steel blue above; sides of 

 head and neck, chest and sides grayish brown; 

 paler on chin and throat, and shading to white 

 on remaining under parts. 



Female. Resembling male but duller. 



Young. Duller than adults, with the back 

 more sooty, the young male in the second year 

 exactly like the female. 



Common everywhere in the Canal Zone, nest- 

 ing about the eaves and roofs of buildings. A 

 favorite roost, w^here enormous numbers of them 

 gather toward evening, is on some telephone 

 wires near the water front, not far from the 

 President's Palace, Panama City. 



6. Petrochelidon lunifrons tachina Oberholser 

 Lesser Cliff Swallow 



Sexes alike. Length 119 mm. (4.70 in.); 

 tail 47 mm. (1.85 in.). Forehead dull cinnamon 

 350 



