Deborah Cramer centers The Narrow Edge on two seemingly very disparate creatures: the red knot – a lithe bundle of avian energy – and the lumbering, earth-bound, prehistoric horseshoe crab. But these organisms, their interactions, their environments, and their history simply serve as an opportunity to explore issues of species adaptations, ecological crisis, and conservation efforts. Following the red knot's migratory route, Cramer traveled over 40,000 miles from Tierra del Fuego to the Arctic, exploring organisms, history, and habitat along the way. The reader shares with her the wonder of this tiny bird that can fly up to 4000 miles without rest, unerringly finding feeding grounds and breeding grounds a hemisphere apart. Cramer notes:...

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