PASSERINE BIRDS OF NEW YORK 151 



Otocoris alpestris leucolsema (Coues). Pallid Horned 



Lark 



The adult plumages correspond to those of 0. alpestris, paler 

 colors and larger size being the principal differences. The Juvenal 

 plumage is nearly black above, spotted with pale buff and similar 

 below to 0. a. praticola. 



Pica pica hudsonica (Sab.). American Magpie 



1. Natal Down. No specimen seen. 



2. Juvenal Plumage acquired by a complete postnatal moult. 



Above, and on throat, breast and crissum, dull black ; abdomen and feathers of hu- 

 meral tracts white, the latter with buff or dusky tinge. Wings, including coverts, 

 iridescent greens and blues, the latter chiefly on the secondaries and tertiaries, 

 the primaries white except on outer edge. Tail iridescent or metallic purples, 

 greens and blues. 



A bird of June 2 2d, from eastern Washington, is in full juvenal 

 dress, the tail one-half grown. 



3. First Winter Plumage acquired by a partial postjuvenal 

 moult which involves the body plumage but not the wings nor 

 the tail. Young and old become practically indistinguishable. 



a metallic purplish, greenish and bluish dress is assumed, the white of the humeral 

 tracts is more conspicuous and the rump becomes grayish white. The feathers 

 of the throat are white basally. 



A Western specimen of August i8th is beginning the post- 

 juvenal moult and one of September i8th is in full first winter 

 plumage except an area of pulpy feathers on the mid- throat. 



4. First Nuptial Plumage acquired by wear which is very 

 inconspicuous as is commonly the case in species with iridescent 

 plumage. 



5. Adult Winter Plumage acquired by a complete post- 

 nuptial moult and 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. 



