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Wing of a Bird, Showing the Arrangement of the Feathers

Wing of a Bird, Showing the Arrangement of the Feathers.jpg Osprey and GraklesThumbnailsSkeleton of an Extinct Flightless Toothed Bird, HesperornisOsprey and GraklesThumbnailsSkeleton of an Extinct Flightless Toothed Bird, HesperornisOsprey and GraklesThumbnailsSkeleton of an Extinct Flightless Toothed Bird, HesperornisOsprey and GraklesThumbnailsSkeleton of an Extinct Flightless Toothed Bird, HesperornisOsprey and GraklesThumbnailsSkeleton of an Extinct Flightless Toothed Bird, HesperornisOsprey and GraklesThumbnailsSkeleton of an Extinct Flightless Toothed Bird, Hesperornis
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The longest feathers or primaries (PR) are borne by the two fingers (2 and 3), and their palm-bones (CMC); the second longest or secondaries are borne by the ulna bone (U) of the fore-arm; there is a separate tuft (AS) on the thumb (TH).

Author
The Project Gutenberg EBook of The Outline of Science, Vol. 1 (of 4), by J. Arthur Thomson
Published in 1922
Available from gutenberg.org
Dimensions
1200*647
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Birds
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