274 DWIGHT 



nut on the back and the streaks on the sides of the throat, ap- 

 pear to be adults. 



Female. — The plumages and moults correspond to those of 

 the male. Indistinguishable from the male until the first winter 

 plumage is assumed, which is browner above and paler below 

 with fainter streaking ; the auriculars and transocular streak 

 being grayer, the chestnut on the back a mere trace ; the wings 

 and tail are duller. The first nuptial plumage, acquired by re- 

 newal of a few feathers about the head and by abrasion of the 

 rest of the plumage with fading, differs very little from the first 

 winter. The adult winter plumage is similar to the first winter, 

 but yellower about the head, more distinctly and broadly streaked 

 below, and with more chestnut on the back ; verv like the 

 male first winter. The adult nuptial plumage, acquired partly 

 by moult, resembles the male adult nuptial, differing in paler 

 yellow, less extensive streaking, fainter chestnut of the back and 

 grayish instead of black lores and malar stripes. 



Seiurus aurocapillus (Linn.). Oven-bird 



1. Natal Down. Pale sepia-brown. 



2. Juvenal Plumage acquired by a complete postnatal moult. 



Above, including sides of head, cinnamon-brown, sparingly spotted with olive-brown, 

 the dusky lateral stripes faintly indicated on the crown. Wings and tail olive- 

 brown with olive-green edgings, the coverts slightly tipped with pale cinnamon. 

 Below, pale cinnamon, yellowish white on abdomen and crissum, faintly spotted 

 or streaked on the sides of the chin, on the breast and on the sides with olive- 

 brown. Bill and feet pale pinkish buff becoming very little darker when older. 



3. First Winter Plumage acquired by a partial postjuvenal 

 moult, beginning the end of June, which involves the body plum- 

 age, the wing coverts, and rarely the tertiaries, but not the rest 

 of the wings nor the tail. Young and old become practically in- 

 distinguishable. 



Unlike the previous plumage. Above, brownish olive-green including wing coverts 

 and tertiaries ; the crown dull orange-ochraceous concealed by brownish edgings 

 and bordered by two black stripes extended on the nape. Below, pure white 

 .sometimes washed faintly with pale bufif" or olive-gray especially on the sides 

 and flanks, the chin, abdomen and crissum sometimes faintly yellow tinged, 

 streaked boldly on the throat, breast and sides with black slightly veiled by 

 whitish edgings. A black submalar streak on either side of the chin. Con- 

 spicuous orbital ring, buffy white ; lores grayish ; auriculars obscurely dusliy. 



