Heligoland as an Ornithological Observatory; The Result of Fifty Years' Experience

Heligoland as an Ornithological Observatory; The Result of Fifty Years' Experience

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1895 edition. Excerpt: ...central pair of feathers being usually a little shorter than the lateral pair. The bill in its whole conformation possesses the typical features of that organ in the Warbler family, and is very plainly distinguished from the long-pointed bill of the Crested Wrens. Measurements are of little further use for proving anything in this respect, since the deviations in objects of such small size are too insignificant to be of much value; when, however, these parts of the two species are examined under a magnifier, the differences become apparent in a most striking manner. For a long time nothing definite was known as to the home of this species; it was hardly suspected that it could extend beyond northern Siberia, of which fact there seems to be now no longer any doubt. Seebohm found the nest on the Jenesei, within the limits of the Polar circle, and von Middendorff met with it numerously during the autumn migration to the north of the sea of Ochotsk; thus the breeding area of the species appears to extend from the Lower Jenesei into the most eastern parts of Asia. Sewertzoff, however, states that this Warbler breeds also in Turkestan, and there at heights of from seven to ten thousand feet; and Brooks believes that he has discovered its eggs in the mountains of Kashmir, eight thousand feet above sea level--in both cases, accordingly, at elevations possessed of a summer climate rather similar to that of northern Asia. Nothing further has been reported as regards Sewertzoff s statement; but in respect to that of Brooks, Seebohm says that the eggs collected by him in Kashmir are not those of S. superciliosa, but belong to another hitherto unknown species. What species he is referring to does not appear from his notes; it may probably be S. humei, which...show more

Product details

  • Paperback | 242 pages
  • 189 x 246 x 13mm | 440g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236517415
  • 9781236517418