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To the Ends of the Earth - Ireland's Place in Bird Migration (Hardcover)
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To the Ends of the Earth - Ireland's Place in Bird Migration (Hardcover)
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Migration is a way of life for most birds found in Ireland. Our
nation sits with its back to the Old World and its face to the New
World, so the variety of bird species reaching our shores is
derived from two hemispheres. From across the planet, `our' birds
come - to breed, stop off, or spend the winter. How these visitors
reached our shores puzzled us for centuries. So how do birds
navigate so successfully over enormous distances and make a return
trip to the same nesting site each year? Modern tracking results
are revealing journeys once thought impossible - such as sustained
flight for days at a time. Feats of endurance are one thing but
their homing ability is even more impressive. Most of the
youngsters fly solo to faraway winter quarters they have never
seen. The evidence - and some of the history behind its discovery -
is pieced together in a simple way that brings a new coherence to
the complex ways that birds navigate, the preparations they make
before departure, and their decisions en route - such as when
drifted off course by inclement weather. In a nutshell, birds'
array of sense far exceeds our own. Rather than relying purely on
the sun and the stars for guidance, birds make use of something we
cannot sense - the Earth's magnetic field. Overall they integrate a
range of global phenomena, including patterns of polarised light
visible (to their specially tuned vision) in the sky. This
spectacular book is a must for anyone who has ever wondered how and
why these seemingly fragile creatures make such gruelling journeys.
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