By Ian Newton
The phenomenon of poultry migration has interested humans from time immemorial. The arrivals and departures of alternative species marked the seasons, heralding spring and autumn, and offering a competent calendar lengthy prior to whatever higher grew to become available.
Migration is proven by way of many sorts of animals, together with butterflies and different bugs, mammals, marine turtles and fish, yet in none is it as greatly built as in birds. The collective trip routes of birds span nearly the full globe, with a few severe go back trips masking greater than 30,000 km. because of migration, poultry distributions are continuously altering – in normal seasonal styles, and on neighborhood, neighborhood or international scales.
Migration has again and again caused widespread questions, resembling the place birds move or come from, why do they do it, how do they be aware of while and the place to trip, and the way do they locate their means? during this e-book, Ian Newton units out to respond to those – and different – questions.
The ebook is split into 4 major sections: the 1st is introductory, describing the different sorts of poultry events, tools of analysis, and the most migration styles obvious round the British Isles; the second one half is anxious commonly with the method of migration – with timing, power wishes, climate results and navigation; the 3rd with evolution and alter in migratory behaviour; and the fourth with the geographical and ecological elements of chook movements.
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Extra resources for Bird Migration (Collins New Naturalist Library, Book 113)
Bird Migration (Collins New Naturalist Library, Book 113) by Ian Newton