306 DWIGHT 



Regulus calendula (Linn.). Ruby-crowned Kinglet 



1. Natal Down. No specimen seen. 



2. Juvenal Plumage acquired by a complete postnatal 

 moult. 



Above, including wings and tail, clove-brown, the crown and back with faint dusky 

 mottling. Wing edgings olive-green, those of the tertiaries grayer. Below, 

 dull bufty white, browner on the abdomen and crissum. Bill and feet dusky 

 pinkish buft", nearly black later. 



Similar to R. satrapa but darker, the crown uniform with the back and no super- 

 ciliary line. 



3. First Winter Plumage acquired by a partial postjuvenal 

 moult, in the far North, which involves the body plumage, and 

 the wing coverts, but not the rest of the wings nor the tail, 

 young and old becoming practically indistinguishable. The 

 " ruby " crown is assumed by the young bird. 



Above, including sides of head and neck, grayish olive-g;reen brightest on the rump 

 and edgings of the wings and tail, the coverts and tertiaries tipped with white 

 or buff. Median stripe on crown and occiput scarlet vemiilion or orange. Be- 

 low, olive-buff, browner on the sides. A conspicuous orbital ring white, inter- 

 rupted with dull black above and below. 



4. First Nuptial Plumage acquired by wear, the back be- 

 coming grayer and the tertiary edgings mostly lost. A few new 

 feathers often appear in the spring indicating a tendency toward 

 a prenuptial moult. 



5. Adult Winter Plumage acquired by a complete post- 

 nuptial moult. Practically indistinguishable from first winter 

 dress. 



6. Adult Nuptial Plumage acquired by wear as in the 

 young bird. 



Female. — The plumages and moults correspond to those of 

 the male. Females are somewhat browner in autumn and lack 

 in all plumages the red crown spot of the male. 



Polioptila caerulea (Linn.). Blue-gray Gnatcatcher 



1. Natal Down. No specimen seen. 



2. Juvenal Plumage acquired by a complete postnatal moult. 



