The ancestors of ostriches and emus were long-distance fliers. Here's how we worked this out

Aside from being a delight to watch, flight in birds is regarded by many cultures as a symbol of freedom, and a source of ...
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The story of flight, from the ancient winged gods to the age of space, by John Lewellen and Irwin Shapiro. Illustrated with old prints, photos., and original paintings and ...

The story of flight, from the ancient winged gods to the age of space, by John Lewellen and Irwin Shapiro. Illustrated with old prints, photos., and original paintings and drawings by Harry McNaught ...