314 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



but the dark bars on the abdominal feathers paler, narrower, more 

 widely spaced and less conspicuous; bill blackish with the base of the 

 mandible pale yellowish; iris dark brown; tarsi and toes as in males 

 but paler. 



Adult female (erythristic phase). — Similar to the erythristic male, 

 with the chestnut color even more uniformly distributed, including the 

 chin, throat, and the whole head (no blackish frontal or parietal marks). 



Immature (first winter). — Similar to the adult of the corresponding 

 sex and phase but with the two outer primaries more pointed terminally 

 (retained from the juvenal plumage). 



Juvenal maie (normal phase). — Forehead and center of crown and 

 occiput dull fuscous to chaetura drab, bordered laterally with broad 

 hair-brown superciliaries ; scapulars, interscapulars, and feathers of 

 upper back between snuff brown and Saccardo's umber, each feather 

 with a pale buffy shaft streak and subterminally blotched with dark 

 sepia to fuscous, the rest of the feather sometimes indistinctly banded 

 with pale ochraceous-tawny ; feathers of middle of lower back Saccardo's 

 umber with very large subterminal blotches of deep fuscous, the umber 

 often merely forming a narrow edge; rest of back, rump, and upper tail 

 coverts dull wood brown indistinctly mottled transversely with dusky, 

 the upper tail coverts being more distinctly barred ; wings practically 

 as in adults but all the primaries more pointed; rectrices as in adult but 

 the median ones with the freckling more definitely arranged into bars; 

 lores, cheeks, and auriculars like the crown; chin and upper throat 

 dirty white, the breast dull light vinaceous-cinnamon with a grayish wash ; 

 abdomen dull whitish, the sides, flanks, and thighs washed with grayish 

 wood brown, a few of the side feathers with russet shaft stripes ; ventral 

 under tail coverts wood brown tinged with cinnamomeous ; bill dusky 

 or reddish brown above and on the tip of the mandible, paling to pinkish 

 white on its base ; tarsi and toes dull yellowish white ; iris dark brown. 



Juvenal female (normal phase). — Like the male of the same stage 

 but duller, the white areas more clouded with grayish, the brown areas 

 less rufescent. 



Juvenal (erythristic phase). — Similar to the adult of the same phase 

 but with considerable white on the chin, throat, and upper breast. 



Natal down (normal phase). — Forehead, lores, broad superciliaries, 

 cheeks, and auriculars pale ochraceous-tawny to ochraceous-buff ; a line 

 of blackish from back of the eye to the nape; center of crown and oc- 

 ciput and entire middorsal tract to the tail deep russet to chestnut deep- 

 ening along the edges to bay; wings pale ochraceous-tawny mixed and 

 blotched with russet to chestnut; rest of upperparts wood brown vari- 

 ously tinged with ochraceous-buff and transversely mottled with dusky; 

 chin and throat pale buffy white; rest of underparts similar but slightly 

 duskier ; bill, tarsi, and toes pinkish white ; iris dark brown. 



