Preliminary observation on the ecological habits of picus canus 黑枕绿啄木鸟生态习性的初步观察
2.
Picus sizhi ding of the macao institute of technology has been working with the primi community in northwestern yunnan and southwestern sichuan for more than ten years , and has written his phd thesis and a number of other publications on primi 丁思志博士是澳门理工大学的研究员，在云南省的西北部和四川省的西南部普米族社区进行普米族语言研究十余年，并且撰写了普米语研究博士论文和一些专题论文。
3.
Dusky thrush ( turdus naumanni ) , common magpie ( pica pica ) , bohemian waxwing ( bombycilla garrulus ) , grey - faced woodpecker ( picus canus ) mainly consists of single species , and the average population size is 6 . 26 individuals ( 1989 - 1990 ) and 7 . 44 individuals ( 2001 - 2002 ) , the mixed species population mainly consists of great tit ( parus major ) , marsh tit ( parus palustris ) , eurasian nuthatdch ( sitta europaed ) , the average species number is about 3 , average number is 7 . 4 individuals 冬季鸟类的集群明显，单种群主要为长尾山雀、斑鸦、喜鹊、太平鸟和黑枕绿啄木鸟群，每群平均个体数为6 26只门? 1990年）和7 44只（ 2001 2002年） ，混合群主要由大山雀、沼泽山雀和普通幅构成，每群平均种数在3种左右，平均个体数在7
