198 DWIGHT 



3. First Winter Plumage acquired by a partial postjuvenal 

 moult in August in Labrador which involves the body plumage 

 but apparently not the wings nor the tail, }-oung and old becom- 

 ing indistinguishable. 



Pileum chestnut, faintly edged in median line with buff, feathers of back black 

 bordered with zone of chestnut, the edgings rich buff, rump Isabella-color, 

 often grayish. White wing bands, the greater coverts and tertiaries (white 

 tipped) are edged with chestnut, the lesser wing coverts wholly olive-gray. 

 Below, dull white, the chin, throat, breast, sides of head and neck and super- 

 ciliary line pale French-gray, the sides washed with wood-brown, a conspicuous 

 clove-brown central breast spot. 



4. First Nuptial Plumage acquired b}- wear, the buff 

 edgings of the back becoming gra}'ish and the chestnut eveiy- 

 where slightly paler. New feathers regularly grow on the chin 

 in March but apparently not in the other tracts and their ap- 

 pearance indicates, as in some other species, renewal rather than 

 moult, for they are \'ery kw in numbers. 



5. Adult Winter Plumage acquired by a complete post- 

 nuptial moult and indistinguishable from first winter dress. 



6. Adult Nuptial Plumage acquired by wear as in the 

 young bird. 



Female. — The sexes are indistinguishable and the moults are 

 the same. 



Spizella socialis (\\'ils.). Chipping Sparrow 



1. Natal Down. Mouse-gray. 



2. Juvenal Plumage acquired by a complete postnatal moult. 



Above, wood-brown, grayish on nape and rump, heavily streaked with dull black, 

 faintly tinged on scapularies and crown with chestnut. Wings and tail dull 

 black, rectrices and primaries ashy edged, the secondaries and tertiaries chestnut 

 edged, wing coverts and tertiaries terminally edged with buff. Ill-defined 

 superciliary stripe, dull gi-ayish white spotted with black. Auriculars wood- 

 brown. Dusky loral and postocular streak. Below, white, streaked except on 

 abdomen and crissum, with dull black. Bill and feet pinkish buff, the former 

 growing dusky and the latter wood-brown with age. 



3. First Winter Plumage acquired by a partial postjuvenal 

 moult beginning the middle of August, which involves the body 

 plumage, and the wing coverts but not the rest of the wings nor 

 the tail. 



