The SkuasA comprehensive monograph of the skua. Many birdwatchers may never have seen a skua; those who have will most probably have vivid memories of one or other species flying powerfully past a headland, or twisting and diving in pursuit of its piratical intentions towards a food-laden seabird - or, perhaps more memorably still, of themselves taking evasive action from the power-diving irate skua whose territory they have unwisely invaded. The full classification of the skuas is still debated, but Dr Furness of the Applied Ornithology Unit, Glasgow University, favours six species, of two genera, with five subspecies, based on current knowledge and his own long and dedicated field studies and research. All of the species are treated comparatively under the following chapter titles: Early history and classification, Distributions and populations, Migration patterns, Reversed sexual size dimorphism, Behaviour, Food and feeding, Kleptoparasitism, Plumage polymorphism, Breeding systems and social organisation, Breeding - laying to hatching, Breeding - hatching to fledging, Population dynamics, Pollutants, Skuas and agriculture, Skuas and conservation. The text is supported by 100 maps and diagrams, 30 photographs and 65 tables. In addition, John Busby contributes 35 evocative drawings which more than embellish this erudite and readable summary of an impressive and diverse group of birds. Jacket paintings by John Busby. |
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Common terms and phrases
aggressive Alaska Andersson Antarctic Arctic Skuas attack behaviour Bonxies breeding season breeding success Brown Skuas cadmium Catharacta Chilean Skuas clutches colour phases crofters dark phase density diet dimorphism eggs Faeroes Fair Isle Falkland Skuas feathers feeding female find first breeding fish fishing fledging fledglings flight flocks fly foraging Foula frigatebirds Furness Gannets Gough Island Greenland Guillemots Hermaness Iceland immature increased incubation influences Kittiwakes kleptoparasitism large numbers large skuas levels light phase Long-tailed Skuas males mate mercury migration morph nonbreeders North Atlantic Noss numbers O’Donald ofthe organochlorine Orkney pairs particularly PCBs penguins petrels phase birds plumage Pomarine Skuas predation ringed robbing Sandeels Scotland seabirds sexes sexual sheep Shetland significant Skua breeding Skua chicks Skua colony Skua numbers skua populations Skuas nesting Skuas on Foula small skuas South Polar Skuas species Spitsbergen Stercorarius suggest Table terns territory Tristan Skuas tundra weight wing length wintering areas