294 DWIGHT 



Troglodytes aedon Vieill. House Wren 



1. Natal Down. Sepia-brown. 



2. Juvenal Plumage acquired by a complete postnatal moult. 



Above, Prout's- brown, russet tinged on the rump and deep grayish sepia on the 

 pileum, sometimes very faintly barred. Wings and tail Prout's-brown, darkest 

 on the wings, both with wavy, dusky barring, the palest areas on the outer 

 primaries. Below, including sides of head, dull grayish white with dusky 

 mottling, washed strongly with russet on the flanks and crissum. Orbital ring 

 dusky buff. Bill and feet buffy sepia-brown, becoming darker. 



3. First Winter Plumage acquired by a partial postjuvenal 

 moult, beginning late in August, which involves the body plum- 

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

 tail, young and old becoming practically indistinguishable. 



Similar to previous plumage but darker and grayer with faint barring above, the 

 wing coverts, chiefly the lesser with whitish spots ; below whiter without mot- 

 tling, the throat and sides obscurely barred with pale drab, the flanks and cris- 

 sum boldly barred with dull black which is bordered with russet. 



4. First Nuptial Plumage acquired by wear, excessive by 

 the end of the breeding season, which brings out the barring 

 more conspicuously and makes the bird grayer and paler, es- 

 pecially below. 



5. Adult Winter Plumage acquired by a complete post- 

 nuptial moult in August. Practically indistinguishable from 

 first winter, perhaps averaging grayer with darker wings and tail. 



6. Adult Nuptial Plumage acquired by wear as in the 

 young bird. 



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



Troglodytes hiemalis Vieill. Winter Wren 



1. Natal Down. Sepia-brown. 



2. Juvenal Plumage acquired by a complete postnatal moult. 



Above, Mars-brown russet-tinged, the crown feathers paler centrally. Wings 

 darker and tail ruddier, both duskily barred, alternating on the outer primaries 

 with pale buff, the coverts with whitish terminal dots. Below, pale cinnamon 

 with dusky and whitish mottling, the flanks and crissum deep russet. Orbital 

 ring and faint superciliary line dull buft. Bill and feet pale sepia-brown be- 

 coming darker. 



