File:PSM V84 D216 Flocking habit of migratory birds fig3.jpg

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Description Fig. 3. Platton flickr formation, which is seldom ovserved; only the end burds can see towards the side. The field of view becomes more obscured as the number of burds increase. Non-protective.
Date
Source C. C. Trowbridge: On the origin of the flocking habit of migratory birds. The Popular science monthly, Volume 84, p212. New York, Popular Science Pub. Co., March 1914. Online: archive.org.
Author C. C. Trowbridge
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  • C. C. Trowbridge: On the origin of the flocking habit of migratory birds
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:PSM_V84_D216_Flocking_habit_of_migratory_birds_fig3.jpg

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current17:29, 14 January 2014Thumbnail for version as of 17:29, 14 January 20141,608 × 175 (26 KB)Ineuw (talk | contribs)Cleaned image
17:34, 14 March 2011Thumbnail for version as of 17:34, 14 March 20111,720 × 207 (32 KB)Martin H. (talk | contribs)

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