THE FLIGHT OF BIRDS.
Interesting facts as to tbe flight of birds has resulted from a long series of observations, whose general results have recently beeo published. An eagle was observed by Hergessell, of Strasburg, to fly at a height of 0000 feet. A lark was detected at an altitude of 1000 feet. Aeronauts have encountered crows as high as 4200 fee , from tho earth. These, however, are exceptional altitudes for birds to attain. As a rule 1800 feet seems to be the limit. The German Ornithological Society has been conducting experiments with pigeons, and finds that when liberated at a height of 9000 feet down to as little as 2700 feet, they drop rapidly to a much lower region of the atmosphere.
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Bibliographic details
Bruce Herald, Volume XXXIX, Issue 143, 12 June 1903, Page 2
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123THE FLIGHT OF BIRDS. Bruce Herald, Volume XXXIX, Issue 143, 12 June 1903, Page 2
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