FAMILY STRIGIDAE 171 



duced or absent. The darker colored jardinii, both in the typical 

 form of South America and the northern race of Costa Rica and 

 Panama, from present scanty data appears to range at higher eleva- 

 tions in the mountains than the others. Until more information is 

 available I prefer to treat jardinii as a separate species. 



GLAUCIDIUM BRASILIANUM RIDGWAYI Sharpe: 

 Ferruginous Pygmy Owl; Cocalito 



Figure 27 



Glaucidium ridgzvayi Sharpe, Ibis, ser. 3, vol. 5, January 1875, p. 55. (Merida, 

 Yucatan.) 



A small owl, without feather horns ; crown streaked with buffy 

 white ; tail with 5 or 6 light bars. 



Description. — Length 145-170 mm. Two color phases, grayish 

 brown, and rufescent. Grayish brown phase: adult (sexes alike), 

 above dark grayish brown ; crown and hindneck with narrow longi- 

 tudinal shaft lines of buff; a narrow, partly concealed white band 

 across base of hindneck, with a black spot at either end ; scapulars 

 and wing coverts with irregular spots and bars, partly concealed, of 

 white and cinnamon-buff ; outer web of primaries spotted with 

 white and buff; tips of secondaries barred with dull cinnamon-buff; 

 tail fuscous-black or cinnamon-brown with 5 or 6 bars of white 

 edged with buff ; lores and superciliary white ; side of head dark 

 grayish brown ; throat and side of lower jaw white ; an indistinct band 

 of dark brown mixed with black across foreneck ; rest of lower sur- 

 face white, heavily striped on sides with warm brown ; legs white to 

 buff, mottled wih grayish brown ; under wing coverts white to buffy 

 white, blotched with black and dark grayish brown ; underside of 

 wing dark dull gray, banded with white and grayish white. 



Rufous phase : adult (^ sexes alike), entire upper surface cinnamon- 

 rufous to russet, with the paler streaks and bars deeper buff ; lower 

 surface streaked with cinnamon-rufous. 



Immature, in both phases, with streaks on crown and hindneck 

 absent, or restricted to a few marks on the forehead. 



An adult male in grayish brown phase, and an adult female in 

 rufescent phase, taken at Guanico Arriba, Los Santos, January 28, 

 1962, had the iris bright yellow ; bill, including gape and cere, light 

 greenish yellow, brighter green on the sides ; bare area across center of 

 upper eyelid dull green; toes honey yellow, with the pads on the 

 underside yellow ; claws black. 



