Birds in Flight
by W. P. Pycraft
Publisher: Gay & Hancock ltd. 1922
Number of pages: 220
The wings of the bird not only lift the body from the earth, but they sustain it in the air by their marvellously complex movements. And this is true, in varying degrees of bird, and bat, and butterfly: of dragon-fly and beetle ...
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by Bruce Wright (ed.) - Smashwords
A collection of papers and articles from international bald eagle experts, which present a complete portrait of the status and ecology of the bald eagle in Alaska. Myriad topics include culture, biology, population history and status, etc.
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