红嘴山鸦繁殖生物学的研究

红嘴山鸦(Ｃｏｒａｃｉａｐｙｒｒｈｏｃｏｒａｘ)又称红嘴乌鸦,为典型的山地鸟类。有关该鸟繁殖生物学的研究,在国内见有寿振黄(1936)、郑作新(1963)、赵正阶(1985)、刘焕金(1987)等。但资料较零星。1985～1991年的3～12月,在山西省庞泉沟自然保护区对红嘴山鸦的繁殖生物学进行研究,现报道如下。1　工作区概况及方法庞泉沟自然保护区位于山西省吕梁山脉中段,地处交城和方山两县交界,东经111°22′～111°33′,北纬37°45′～37°55′,全区总面积为103×105ｈｍ2,主峰孝文山海拔2830ｍ,其地质、地貌、森林、植被、气候、农作物等见文献1]。…

A Study on Breeding Ecology of Coracia pyrrhocorax.

The breeding ecology of Coracia pyrrhocorax in Pangquangou Natural Reserve were studied from March to December, 1985-1991. The studies included habitats, population density, bree ding, food,and etc. The bird bred from March to July, mating system was monogamy. The bird began nesting in March, began to lay eggs between middle to late March, laying one egg per day, and the clutch size was 4-6. Incubation period was 18-22 days, and the hatching success rate was 94.20%. Brooding periods was 25-31 days in the nest and 11-15 days after fledging.