132 DWIGHT 



I. ANNUAL OR SINGLE MOULT (Postnuptial). 



1 . Postjuvenal Moult complete. 



a. Young and adults nearly alike in Winter and Nup- 



tial Plumages. A 



b. Young and adults unlike in Winter and Nuptial 



Plumages. B 



2. Postjuvenal Moult incomplete, not involving remiges nor 



rectrices. 



a. Young and adults nearly alike in Winter and Nup- 



tial Plumages. C 



b. Young and adults unlike in Winter and Nuptial 



Plumages. D 



3. Young with a First Prenuptial Moult, following incom- 



plete Postjuvenal Moult. 



a. Extensive, including often rectrices and even a few 



remiges. E 



b. Limited chiefly to the head. F 



II. SEMIANNUAL OR DOUBLE MOULT (Postnuptial and Prenup- 



tial). 



1 . Prenuptial Moult complete. G 



2. Prenuptial Moult of body complete (in young including 



often the rectrices and sometimes a few remiges). H 



3. Prenuptial Moult of body incomplete, never involving rec- 



trices nor remiges. I 



4. Prenuptial Moult of body very incomplete and limited 



chiefly to the head. J 



CLASS A 



Otocoris alpestris Ammodramus maritimus 



" " praticola Melospiza fasciata 



leucolaema Cardinalis cardinalis 



Sturnus vulgaris Petrochelidon lunifrons 



Molothrus ater Chelidon erythrogastra 



Sturnella magna Tachycincta bicolor 



Scolecophagus carolinus Clivicola riparia 



Quisculus quiscula Stelgidopteryx serripennis 



aeneus Vireo noveboracensis (C ?) 



Passer domesticus Icteria virens (C ?) 



