Seasonal Change in Breeding Success of the Black-Billed Magpie Pica pica sericea
نویسندگان
چکیده
منابع مشابه
Feather microstructure of the black-billed magpie (Pica pica sericea) and jungle crow (Corvus macrorhynchos).
The jungle crow (Corvus macrorhynchos) distribution stretches from eastern Eurasia continent to southeastern Asia. The distribution of the black-billed magpie (Pica pica sericea) stretches from Korea and China to the Kyushu area in Japan. They are both in the Family, Corvidae, and have iridescent feather colors, but the iridescent feather color of the black-billed magpie is more remarkable than...
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—Rules of food allocation between nestlings of the black-billed magpie Pica pica, a species showing brood reduction. Aims: The existence of a size hierarchy of nestlings in a brood facilitates a secondary readjustment of brood size to resource availability, through the death of the smaller chicks when food is scarce. A mechanism to facilitate brood reduction would be for parents preferentially ...
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Between 1997 and 1998 the breeding density, nest sites, clutch size and egg dimensions of the magpie (Pica pica) was investigated in a 7 km2 area in the Krapina river valley. We recorded a high breeding density of 4.79 pairs/km2 (during both years). The nests were situated at a height of 1–16 m above ground (mean = 6.74 m). Magpie nests were found in at least 9 species of bushes and trees. We r...
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Laying date is one of the most important determinants of reproductive success and recruitment probability in birds. Late breeders usually £edge fewer chicks than individuals with earlier breeding dates, and £edglings produced late in the season have high mortality rates. Food availability and nestling mass have been evoked as the principal mechanistic links between laying date and o¡spring surv...
متن کاملMortality associated with avian reovirus infection in a free-living magpie (Pica pica) in Great Britain
BACKGROUND Avian reoviruses (ARVs) cause a range of disease presentations in domestic, captive and free-living bird species. ARVs have been reported as a cause of significant disease and mortality in free-living corvid species in North America and continental Europe. Until this report, there have been no confirmed cases of ARV-associated disease in British wild birds. CASE PRESENTATION Sporad...
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ژورنال
عنوان ژورنال: Japanese Journal of Ornithology
سال: 1995
ISSN: 0913-400X
DOI: 10.3838/jjo.44.73