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Table 1 Sample sizes and nest fates of greater sage-grouse in central Wyoming

From: Landscape features and weather influence nest survival of a ground-nesting bird of conservation concern, the greater sage-grouse, in human-altered environments

 

Sample sizea

Datesb

Nest fatea

Apparent survivalc

Year

Females

Nests

First

Last

Hatched

Depredated

Other

Hen-killed

 

2008

17

18

26 April

11 June

5

13

0

0

0.28

2009

23

26

22 April

14 June

8

15

1

2

0.31

2010

27

39

21 April

12 July

11

22

0

6

0.28

Total

67

83

-

-

24

50

1

8

x Ì„ = 0.29

  1. aAnnual sample sizes of female greater sage-grouse and nests, and corresponding nest fates, on the 5,625-km2 study area in the Wind River Basin in central Wyoming, USA. bDates listed are for the initiation of the first nest (i.e., First) and the hatching or depredation of the last nest (i.e., Last). Nests of female greater sage-grouse that died during incubation were considered failed nests. cApparent annual nest survival (i.e., successful hatch) was calculated as 'Hatched'/'Nests.'