326 BIRDS OF THE REPUBLIC OF PANAMA PART 2 



gray ; under tail coverts dark gray edged with grayish white ; femoral 

 tufts white. 



Female, above like male, but with crown duller metallic green ; 

 under surface somewhat dull white or grayish white, spotted with 

 metallic green, in some the spots more bluish across the breast ; outer 

 tail feathers tipped with gray. 



Juvenile, throat dusky gray, with the feathers edged narrowly 

 with pale buff. 



An adult female, taken at Armila, San Bias, March 5, 1963, had 

 the iris mouse brown; maxilla and tip of mandible black; base of 

 mandible pale dull red; tarsus, toes, and claws black. 



Measurements. — Males (14 from Panama), wing 52.8-55.7 (53.8), 

 tail 27.1-31.0 (29.0), culmen from base 17.5-19.8 (18.9) mm. 



Females (12 from Panama), wing 49.4-52.6 (50.9), tail 25.5-28.7 

 (27.0), culmen from base 19.0-20.3 (19.6) mm. 



Weight, 1 male, 4.78 grams ; 3 females, 3.76, 3.8, 3.98 grams (Hart- 

 man, Auk, 1954, p. 468). 



Resident. Fairly common on the Caribbean slope from western 

 Bocas del Toro to far eastern San Bias, and on the Pacific side 

 throughout the eastern sector of the Province of Panama and Darien, 

 to an elevation of 600 meters near Cana on Cerro Pirre. 



This is a widely distributed hummingbird, found throughout the 

 tropical lowlands, absent only on the Pacific slope from the Canal 

 Zone westward. As this range implies, it is a bird of forested areas 

 though in feeding it comes to flowering trees, as the guayabo, in open 

 areas. At these trees often many congregate, but elsewhere they are 

 found alone. In the forest they glean regularly over leaves. In 

 several I have found the throat filled with insects, mainly tiny 

 diptera, but including ants and other small hymenoptera. Occasionally, 

 I have heard males singing chirping, twittering notes, sometimes ap- 

 parently scolding me. I have not seen an account of the nest. 



On a shaded quebrada near El Uracillo in northern Code one 

 came to a little pool of clear, quiet water at my feet. Here it hovered 

 above the surface, eyeing first me and then the water below, and then 

 dipped in with a little splash. After perching for a minute with 

 fluttering wings it repeated the bath several times, submerging until 

 the water covered its back, all this fearlessly, though almost within 

 reach of my hand. 



To the north this species ranges through the Caribbean slope of 

 Costa Rica and Nicaragua. To the south of Panama it is found 

 through western Colombia to Ecuador, and from the lower Atrato 



