. Handbook of birds of eastern North America; with introductory chapters on the study of birds in nature . r<«r. Plumages of the Scarlet Tanager 1. Adult male, summor. 2. Adult male in post-nuptial (fall) molt, by which it passes into (3) winter plumage. 4. Young male, first winter. 5. Female, which, after the post-juvenal molt, undergoes no changes in color. 6. Juvenal, or nestling plumage, which, in the male, is followed by plumage No. 4, and, in the female, by plumage No. 5. THE MOLT 85 form they fit the bird for locomotion (see beyond, under Uses of theWing and Tail) or in color adapt i
. Handbook of birds of eastern North America; with introductory chapters on the study of birds in nature . r<«r. Plumages of the Scarlet Tanager 1. Adult male, summor. 2. Adult male in post-nuptial (fall) molt, by which it passes into (3) winter plumage. 4. Young male, first winter. 5. Female, which, after the post-juvenal molt, undergoes no changes in color. 6. Juvenal, or nestling plumage, which, in the male, is followed by plumage No. 4, and, in the female, by plumage No. 5. THE MOLT 85 form they fit the bird for locomotion (see beyond, under Uses of theWing and Tail) or in color adapt it to the special needs of its hauntsand habits. In the first place, however, the field student should haveBome knowledge of the laws of feather change included under the generalterm of molt. The Molt.—WTien hatched, a Passerine bird is naked except for ascanty growth of filmy down on the feather tracts of the upper half ofthe body. This is the natal down of Dwight (00) whose terminologyI adopt. The natal down is quickly succeeded by the juvenal or nest-ling plumage, which is sufficiently grown in from eight
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, bookyear1912
