The Migration of Birds; An Attempt to Reduce Abian Season-Flight to Law

The Migration of Birds; An Attempt to Reduce Abian Season-Flight to Law

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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. 1892 edition. Excerpt: ...the case of various Humming Birds and Parrots: "When the parasite plants of Guiana," says Waterton, " have come into full bloom, then is the proper time to find certain Humming Birds, which you never fall in with when these parasites are only in leaf. I have sought for them whole months without success, until the blooming of the parasite plant informed me that I need labour in vain no longer." Further, it has repeatedly been noticed that many species of birds in the tropics are distributed over certain parts of the area of their dispersal according to season; coming to some districts to breed, and retiring to others as soon as that duty is completed. During the hot season in some countries great areas are so burned and scorched that many birds are compelled to migrate for some distance to other areas, where more suitable conditions of existence are presented. The distance travelled, the routes followed, and the exact periods of absence, have been little recorded; but the broad fact remains that a movement takes place. Probably very few species in any part of the world remain absolutely stationary throughout the year; everywhere important changes take place, and birds have to adapt themselves to those changes, which in most cases involve a temporary removal from one district to a more or less remote other district. In countries where vast flights of locusts are continually wandering to and fro, birds of many species follow in their wake to prey upon these insects; whilst in South Africa, Mr. Seebohm observed a most interesting local movement of certain birds in search of roasted grasshoppers, destroyed by the great prairie fires. Large flights of Pratincoles (Glareola melanoptera), and numbers of Ruppell's Lapwings (Kanellus...
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Product details

  • Paperback | 86 pages
  • 189 x 246 x 5mm | 168g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236609883
  • 9781236609885