314 DWIGIIT 



6. Adult Nuptial Plumage acquired by wear as in the young 

 bird. 



Female. — The sexes are usually indistinguishable in most 

 plumages although the female is duller in first winter and first 

 nuptial plumages, the black about the head brownish, the wings 

 and tail browner with less distinct tail blotches. 



Hesperocichla naevia (Gmel.). Varied Thrush 



1. Natal Down. No specimen seen. 



2. Juvenal Plumage acquired by a complete postnatal moult. 



Above, olive-brown, plumbeous on rump ; very faint whitish shaft-streaks. Wings 

 and tail clove-brown with ochraceous bands edging the quills and tipping 

 the coverts. Below, ochraceous buff, whiter on abdomen, a pectoral band 

 and edgings of throat and breast, olive-brown. Supra-auricular line bufT. 



3. First Winter Plumage acquired by a partial postjuvenal 

 moult which involves the body plumage and wing coverts but 

 not the rest of the wings nor the tail, young and old becoming 

 practically indistinguishable. It is worthy of notice that this is 

 another species which shows parti-colored feathers at the junc- 

 tion of two areas of different colors. 



Similar to previous plumage, but deeper tints. Above, deep plumbeous gray with 

 brownish edgings, darker on the pileum, the wing coverts broadly tipped with 

 deep orange buff, forming two wing bands. Below rich orange buff, the abdo- 

 men and crissum chiefly white mixed with buff and olive-gray, the sides with 

 olive-gray edgings. A black pectoral band, somewhat veiled with gray, orange 

 tinged. 



4. First Nuptial Plumage acquired by wear, which pro- 

 duces slight effects birds becoming grayer above. 



5. Adult Winter Plumage acquired by a complete post- 

 nuptial moult. Scarcely differs from first winter dress, the 

 colors deeper and the pectoral band broader and blacker. 



6. Adult Nuptial Plumage acquired by wear as in the 

 young bird. 



Female. — The plumages and moults correspond to those of 

 the male. Indistinguishable in juvenal dress, however, especially 

 wings and tail. In first winter plumage duller and browner, 

 the faint pectoral band mouse-gray and the crissum grayer. 



