290 DWIGHT 



Very similar to previous plumage, but darker above with less obvious streaking and 

 deeper pinkish bufif below, the streaking heavier, forming a pectoral band and 

 extending to the flanks ; an immaculate pale buff chin. The superciliary line 

 extends behind the e3'e as a whitish band. 



4. First Nuptial Plumage acquired by a partial prenuptial 

 moult, in April, involving most of the body plumage which has 

 suffered much from wear and become darker above with the buff 

 tints nearly lost below. The extent of the fading is surprising. 

 The new plumage is buff tinged but wear during the breeding 

 season produces a black and white streaked bird, the buffs being 

 wholly lost through fading. 



5. Adult Winter Plumage acquired by a complete post- 

 nuptial moult. Indistinguishable from the first winter dress, 

 the wing edgings perhaps darker, and with less vinaceous tinge 

 below. 



6. Adult Nuptial Plumage acquired by a partial prenuptial 

 moult like the young bird. 



Female. — The sexes are alike and the moults correspond. 



TROGLODYTIDii: 



The members of this family have only an annual moult ex- 

 cept C. stellaris and C. pahistris which are exceptional in under- 

 going a complete (or nearly so) prenuptial moult. The ju venal 

 remiges and rectrices are with these two exceptions worn till the 

 first postnuptial moult. All the seasonal plumages are very 

 much alike. 



Mimus polyglottos (Linn.). Mockingbird 



1. Natal Down. Pale sepia-brown. 



2. Juvenal Plumage acquired by a complete postnatal moult. 



Above, grayisii sepia-brown, somewhat mottled with darker brown. Wings and 

 tail black, the basal portion of the primaries, their coverts, and two outer 

 rectrices white ; wing edgings wood-brown, the feathers paler at tips. Below, 

 dull white, spotted except on the abdomen and crissum, with dull olive-brown. 

 Lores, rictal and submalar streaks faintly dusky. Bill and feet dusky pinkish 

 buff becoming black. 



