9780198546924 - Bird Migration: A General Survey: 3 (Oxford Ornithology Series) von Tomlinson, Tricia (1 Ergebnisse)

Hardcover. Zustand: Very Good. Immediate dispatch from Somerset. Nice book in great condition. Pages in excellent condition. Hardcover. English. See images for condition. About the book >.>.> If geomorphological factors influence the migratory direction of migrants they are called leading lines. If broad-front migration is led by leading lines we speak of guided broad fronts. Very strong canalization of broad-front migration by leading lines may lead to mass migration, and, in areas where this occurs regularly, migration corridors or flyways develop. The Gourish Spit is an excellent example of a European flyway. On this isthmus migration is canalized in such an impressive way that it was chosen as the site of the first German bird observatory (3). In North America four distinct flyways have developed, mainly in waterfowl species, through the effect of leading lines and canalization, namely the Atlantic, Mississippi, Central, and Pacific flyways. The East Atlantic flyway developed between northern Siberia and northern Europe and West Africa, and wader migrations in particular have been studied along it extensively for the past thirty years (Piersma et al. 1987). Mass migration routes may coincide with ma.