COLUMBA. 51 



Family COLUMBID-ffi. 



Tarsus slender, feathered at base; bill slender, gape small, and nostril 

 covering conspicuously swollen; tail nearly square or greatly graduated; 

 colors blackish or reddish brown. 



Subfamilies. 



a 1 . Tail moderate, nearly square; plumage mostly blackish with purple and green 

 metallic reflections Columbinae (p. 51) 



a 2 . Tail greatly elongated and graduated ; plumage mostly chestnut or rufous- 

 brown with little metallic color Macropyginae (p. 52) 



Subfamily COLUMBINAE. .. 

 Genus COLUMBA Linnaeus, 1758. 



Bill comparatively slender; membrane behind nostril greatly swollen 

 and bulging out on the side ; first primary very slightly scooped on inner 

 web ; tarsus feathered at the base. The only Philippine species is almost 

 entirely black, glossed with green and purple. 



43. COLUMBA GRISEOGULARIS (Walden and Layard). 

 GRAY-THROATED PIGEON. 



lanthcenas griseogularis WALDEN and LAYARD, Ibis (1872), 104, pi. 6. 



Columba griseigularis SALVADOBI, Cat. Birds Brit. Mus. (1893), 21, 313; 

 SHARPE, Hand-List (1899), 1, 72; MCGREGOR and WORCESTER, Hand- 

 List (1906), 13. 



Bd-lud mai-tim, Manila; bd-duc, Batan. 



Basilan (Everett, Bourns & Worcester) ; Batan (McGregor) ; Cagayan Sulu 

 (McGregor); Calayan (McGregor); Guimaras (Layard, Meyer); Lubang 

 (McGregor) ; Luzon (Gevers, Whitehead) ; Mindanao (Steere Exp., Platen, Good- 

 fellow) ; Mindoro (McGregor); Negros (Everett, Whitehead); Romblon (Mc- 

 Gregor) ; Sibutu (Everett) ; Sibuyan (McGregor) ; Sulu (Burbidge) ; West Bolod 

 (M earns). Northern Borneo. 



Adult (sexes alike). General color slate-black with metallic purple 

 or green tips to the feathers; chin, upper throat, and sides of face below 

 eyes pale gray; head, neck, back, breast, abdomen, and tips of wing- 

 coverts, and upper and under tail-coverts glossed with metallic purple 

 changing to green; remiges and rectrices black without metallic reflec- 

 tions, their coverts largely black with only the tips metallic ; colors 

 change greatly with the angle at which the specimen is held. Iris 

 bright yellow ; base of bill dark red, tip light yellow ; feet and bare space 

 about eye red. Length, 380 to 430; two males, wing, 248; tail, 161; 

 exposed culmen, 22; tarsus, 28. 



Young. Differs from the adult in having metallic edges of feathers 

 narrower on body, and wanting on wing-coverts; throat and breast 

 blackish brown, each feather tipped with cinnamon. 



