Based on two specimens collected from Sichuan Province, Yang et al. (1989) described a new subspecies of the spotted little owl (Athene brama), the belly-mottled little owl (Athene brama poikila). This subspecies has ...Based on two specimens collected from Sichuan Province, Yang et al. (1989) described a new subspecies of the spotted little owl (Athene brama), the belly-mottled little owl (Athene brama poikila). This subspecies has been acknowledged by Cheng (2000). However, Cheng (2000) also mentioned that further work should be done on this subspecies. In 2001, we checked the specimen of Athene brama poikila in Ya’an, Sichuan and comparing them with the spotted little owl and the boreal owl (Aegolius funereus). The boreal owl is identifiable from its rather square facial disc, however, this character was destroyed during the facture for these two specimens of Athene brama poikila. That is the reason Yang et al.(1989) missed them with the genus Athene. The genus Aegolius is also identifiable from the genus Athene from the character on the toes, as the toes of the boreal owl are covered with thick feathers, whereas the toes of the little owl are bristled. The toes of these two specimens of Athene brama poikila are thickly feathered, corresponding to the identification of the genus Aegolius. The morphological characters and measurements of the two specimens also correspond to the boreal owl. The habitat of the two specimens was reported as conifer deciduous forest around 2 200 m to 3 100 m, which fits the habitat of the boreal owl. The distribution of the endemic Gansu subspecies of the boreal owl (A. f. beickianus) was reported at Tiantangsi, Lianhuashan in Gansu, Guinan in Qinghai and Jiuzhaigou in Sichuan in China, it was also reported at Lahul in north India, Sun et al. (2001) suggested that it is probably the boreal owl is also distributed in the conifer forest of west Sichuan and east Tibet. The new distribution point in Baoxing and Yajiang in Sichuan corresponds to this conjecture. As a conclusion, we believe that these two specimens should belong to the A. f. beickianus of the boreal owl .展开更多
New distribution areas of the Sichuan wood owl (Strix davidi) were recorded at Lianhuashan Natural Reserve (Kangle county),Zecha (Luqu county) and Kache (Zhuoni county) in Gansu,China.Now its distribution includes wes...New distribution areas of the Sichuan wood owl (Strix davidi) were recorded at Lianhuashan Natural Reserve (Kangle county),Zecha (Luqu county) and Kache (Zhuoni county) in Gansu,China.Now its distribution includes west Sichuan,southeastern Qinghai and southern Gansu.Combined with the Ural Owl (Strix uralensis),this distribution range corresponds to the distribution of the genera Bonasa (B.sewerzowi and B.bonasia) and Perisoreus (P.internigrans and P.infaustus).All are related to the endemic birds in Qinghai-Tibet Plateau.Based on our work during 1995～1999,we reported our field observations and preliminary habitat characters of the bird.The main habitat of Sichuan wood owl in Gansu was found in the conifer and conifer-deciduous mixing forest from 2 900 m to 3 300 m.At the Lianhuashan Natural Reserve,the birds were observed many times,with some breeding activities.The population of Sichuan wood owl at Lianhuashan Mountains was an isolated one,and the reserve only protected about 3 360 hm\+2.of its habitat.展开更多
The Chinese Grouse (Bonasa sewerzowi) is a bird endemic to China,inhabiting the conifer-dominated high mountains.It occurs in the most southern range of grouse and is the smallest grouse species in the world.The Chine...The Chinese Grouse (Bonasa sewerzowi) is a bird endemic to China,inhabiting the conifer-dominated high mountains.It occurs in the most southern range of grouse and is the smallest grouse species in the world.The Chinese Grouse has been listed as an endangered species by the China Red Data Book and placed in Category I of nationally protected animals.Since 1995,we have systematically conducted work on the Chinese Grouse using radiotelemetry techniques at the Lianhuashan Nature Reserve in Gansu Province,western China.In this presentation we summarize the mating behavior,nest site selection,incubation rhythm,winter social behavior,diet and other natural history characteristics of this species.With the aid of landscape ecological methods,we also analyze the condition of habitat fragmentation and propose suggestions for conservation.展开更多
文摘Based on two specimens collected from Sichuan Province, Yang et al. (1989) described a new subspecies of the spotted little owl (Athene brama), the belly-mottled little owl (Athene brama poikila). This subspecies has been acknowledged by Cheng (2000). However, Cheng (2000) also mentioned that further work should be done on this subspecies. In 2001, we checked the specimen of Athene brama poikila in Ya’an, Sichuan and comparing them with the spotted little owl and the boreal owl (Aegolius funereus). The boreal owl is identifiable from its rather square facial disc, however, this character was destroyed during the facture for these two specimens of Athene brama poikila. That is the reason Yang et al.(1989) missed them with the genus Athene. The genus Aegolius is also identifiable from the genus Athene from the character on the toes, as the toes of the boreal owl are covered with thick feathers, whereas the toes of the little owl are bristled. The toes of these two specimens of Athene brama poikila are thickly feathered, corresponding to the identification of the genus Aegolius. The morphological characters and measurements of the two specimens also correspond to the boreal owl. The habitat of the two specimens was reported as conifer deciduous forest around 2 200 m to 3 100 m, which fits the habitat of the boreal owl. The distribution of the endemic Gansu subspecies of the boreal owl (A. f. beickianus) was reported at Tiantangsi, Lianhuashan in Gansu, Guinan in Qinghai and Jiuzhaigou in Sichuan in China, it was also reported at Lahul in north India, Sun et al. (2001) suggested that it is probably the boreal owl is also distributed in the conifer forest of west Sichuan and east Tibet. The new distribution point in Baoxing and Yajiang in Sichuan corresponds to this conjecture. As a conclusion, we believe that these two specimens should belong to the A. f. beickianus of the boreal owl .
基金国家自然科学基金项目 (No .39870 135 )德国自然科学基金会+1 种基金中国科学院 (No .KZ95 1 A1 10 5 No .KZCX1 10 0 6 )资助&&
文摘New distribution areas of the Sichuan wood owl (Strix davidi) were recorded at Lianhuashan Natural Reserve (Kangle county),Zecha (Luqu county) and Kache (Zhuoni county) in Gansu,China.Now its distribution includes west Sichuan,southeastern Qinghai and southern Gansu.Combined with the Ural Owl (Strix uralensis),this distribution range corresponds to the distribution of the genera Bonasa (B.sewerzowi and B.bonasia) and Perisoreus (P.internigrans and P.infaustus).All are related to the endemic birds in Qinghai-Tibet Plateau.Based on our work during 1995～1999,we reported our field observations and preliminary habitat characters of the bird.The main habitat of Sichuan wood owl in Gansu was found in the conifer and conifer-deciduous mixing forest from 2 900 m to 3 300 m.At the Lianhuashan Natural Reserve,the birds were observed many times,with some breeding activities.The population of Sichuan wood owl at Lianhuashan Mountains was an isolated one,and the reserve only protected about 3 360 hm\+2.of its habitat.
基金supported by the National Natural Science Foundation of China (Grants 39400016,30370223,30620130110,31071931) since 1995
文摘The Chinese Grouse (Bonasa sewerzowi) is a bird endemic to China,inhabiting the conifer-dominated high mountains.It occurs in the most southern range of grouse and is the smallest grouse species in the world.The Chinese Grouse has been listed as an endangered species by the China Red Data Book and placed in Category I of nationally protected animals.Since 1995,we have systematically conducted work on the Chinese Grouse using radiotelemetry techniques at the Lianhuashan Nature Reserve in Gansu Province,western China.In this presentation we summarize the mating behavior,nest site selection,incubation rhythm,winter social behavior,diet and other natural history characteristics of this species.With the aid of landscape ecological methods,we also analyze the condition of habitat fragmentation and propose suggestions for conservation.
