Penguins are the world's most easily recognized--and perhaps most appealing--group of birds. Flightless, penguins spend the vast majority of their lives swimming in the sea, yet they cannot shake off their evolutionary past: they are warm-blooded air breathers, and they must return to land to lay their eggs. Thus penguins face the challenges of balancing two worlds--the land for breeding, the sea for feeding. This engaging book offers a complete and up-to-date overview of all the world's penguin species as well as new ...

Penguins 2010, T. & A. D. Poyser

ISBN-13: 9780713665505

Hardcover

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Penguins 2004, Yale University Press, New Haven, CT

ISBN-13: 9780300102772

Hardcover

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