. The birds of America : from drawings made in the United States and their territories . ght orange-red, the bare part of the tibia dusky-claws black. On the forehead, a triangular white patch extending to themiddle of the eye; upper part of the head and the nape, with a line fromthe eye to the bill, deep black; sides of the head, fore-neck and lower parts,pure white; back and wings very pale bluish-grey; first two quills with theouter web greyish-black, and rather less than half of their inner web of thesame colour, the rest white, extending to about half an inch from theirextremities. Tail w
. The birds of America : from drawings made in the United States and their territories . ght orange-red, the bare part of the tibia dusky-claws black. On the forehead, a triangular white patch extending to themiddle of the eye; upper part of the head and the nape, with a line fromthe eye to the bill, deep black; sides of the head, fore-neck and lower parts,pure white; back and wings very pale bluish-grey; first two quills with theouter web greyish-black, and rather less than half of their inner web of thesame colour, the rest white, extending to about half an inch from theirextremities. Tail white in summer, of a paler tint than the back at othertimes. Length to end of tail Sf- inches, to end of wings 9^, to end of claws 7^,to end of shortest tail-feathers 7; extent of wings ISf; wing from flexure6y|; tail 3^; bill along the ridge 7^ twelfths, along the edge of lower man-dible lT5f; tarsus ^; middle toe T72, its claw T32. The Female is a little smaller than the male, but otherwise similar. Young fledged. Bill greenish-black. Iris dusky. Feet pale yellowish-orange. All the. ^N THE NODDY TERN. 123 under parts dull greyish-white, as are the upper parts, including the tail; thehind part of the head streaked with dusky, on the back and rump thefeathers with a curved marginal band of greyish-brown; primary quillsgreyish-brown, the outer two darker. At this period the tail is even, eachfeather narrowly margined with greyish-white. In a male bird the tongue is 10 twelfths long, slender, triangular, taperingto a point, horny beneath, emarginate and papillate at the base. On thepalate are five longitudinal ridges. The posterior aperture of the nares islinear, 7 twelfths long. The oesophagus is 4 inches 2 twelfths long, verywide, its average diameter on the neck 4^ twelfths, within the thorax 9twelfths; it is exceedingly thin and delicate, its muscular fibres scarcelyapparent, unless closely examined. The proventriculus is only a quarter ofan inch long. The stomach is 9 twelft
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectbirds, bookyear1840
