NESTING HABITATS AND EGG PREDATION IN SWEDISH BLACK GROUSE

被引:22
作者
BRITTAS, R [1 ]
WILLEBRAND, T [1 ]
机构
[1] UNIV UPPSALA,DEPT ZOOPHYSIOL,S-75122 UPPSALA,SWEDEN
来源
ORNIS SCANDINAVICA | 1991年 / 22卷 / 03期
关键词
D O I
10.2307/3676600
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
During 1984-87, nesting habitats of 72 radio-marked Black Grouse Tetrao tetrix were studied at Boda in central Sweden. There was a marked preference to place nests in younger stands (trees 0.5-3.0 m) compared to mature and maturing forests. Egg predation was significantly lower in the preferred stands than in stands with trees > 3.0 m. We found no difference in selection of nesting habitat between older birds and yearlings, despite a large age-related difference in breeding success earlier reported for the hens in this study. Total cover at nest sites varied considerably, but we found no relationship between cover and egg predation.
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页码:261 / 263
页数:3
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