. A manual of zoology. Zoology. 604 CnOBDATA. which are apteria in which no contour feathers appear (fig. 632). Since the contour overlap like .shingles, they form a firm coat of plumage beneath which the down and semiplumes form a warm Fio^ 632. Fig. 633. Fig. 632.—Feather tracts and apteria of pigeon, dorsal view. (From Ludwig-Leunis.) Fig. 633. —Regions and feathers of Falcd hDurrins. (From Sclimarda.) ^, secondaries : Ua, belly : Br, breast; Bz, rump ; D'-D"\ wing coverts ; D(, gonys of bill: EF, alula ; F, culmen of bill; H, occiput; T-LS, primaries; iC, throat ;
. A manual of zoology. Zoology. 604 CnOBDATA. which are apteria in which no contour feathers appear (fig. 632). Since the contour overlap like .shingles, they form a firm coat of plumage beneath which the down and semiplumes form a warm Fio^ 632. Fig. 633. Fig. 632.—Feather tracts and apteria of pigeon, dorsal view. (From Ludwig-Leunis.) Fig. 633. —Regions and feathers of Falcd hDurrins. (From Sclimarda.) ^, secondaries : Ua, belly : Br, breast; Bz, rump ; D'-D"\ wing coverts ; D(, gonys of bill: EF, alula ; F, culmen of bill; H, occiput; T-LS, primaries; iC, throat ; i. legs ; i\', neck; Sch, crown; Si^, paraptcrium; 5f, forehead, lower tail coverts; Sz^ rectrices ; TI', cheek; WH, cere with nostril; Zh, toes. Besides these covering feathers (coverts, or tectrices, fig. 633, D) there are the longer feathers of the wing, the remiges, and the tail feathers, or rectrices {Sz). The larger remiges form the chief part of the wing; they spring from the part of the limb corresponding to the hand (carpus, metacarpus, phalanges) and are known as primaries (HS). while the secondaries (.), arising from the forearm, are shorter. These are over- lapped at the base by the coverts (B, D', D') and by the parapterium {SF). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
Size: 1925px × 1298px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
