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Table 1 The number of daily recesses and nest constancy of Chinese Grouse females during the incubation period at Lianhuashan Nature Reserve, Gansu, China

From: Egg laying and incubation rhythm of the Chinese Grouse (Tetrastes sewerzowi) at Lianhuashan, Gansu, China

Year-female number

Nest age

Number of daily recessesa

Recess duration (min)b

Nest constancy (%)c

Hatched/Failed

Radio-tracked

99-01

2–26

5.36 ± 1.16 (23)

28.93 ± 7.59 (129)

89.16 ± 1.96

H

Y

99-02

5–16

4.83 ± 0.79 (12)

22.84 ± 5.49 (57)

92.31 ± 1.17

F

Y

99-03

18–24

5.57 ± 0.82 (7)

22.76 ± 10.23 (39)

91.19 ± 1.62

H

Y

00-01

22–30

3.56 ± 0.53 (9)

21.48 ± 7.06 (31)

94.72 ± 1.18

H

N

00-02

6–29

5.25 ± 0.61 (24)

18.87 ± 6.66 (126)

93.12 ± 1.16

H

Y

00-03

7–25

4.84 ± 0.96 (19)

20.66 ± 6.67 (92)

93.05 ± 1.22

F

N

00-04

5–28

4.67 ± 0.87 (24)

23.52 ± 7.93 (113)

92.40 ± 1.29

H

Y

00-05

8–21

4.69 ± 0.63 (13)

22.78 ± 7.42 (64)

92.66 ± 1.07

H

Y

00-06

13–25

6.15 ± 0.81 (13)

21.19 ± 6.31 (78)

91.30 ± 1.69

F

Y

00-07

12–19

4.50 ± 0.53 (8)

18.83 ± 4.34 (36)

94.11 ± 0.75

F

N

01-01

8–18

4.36 ± 0.67 (11)

19.38 ± 6.69 (48)

94.13 ± 1.09

F

Y

01-02

15–29

6.07 ± 0.70 (15)

15.9 ± 5.06 (92)

93.39 ± 1.08

H

Y

01-03

10–26

5.19 ± 0.75 (16)

16.36 ± 6.48 (84)

94.11 ± 1.20

F

N

01-04

13–20

4.29 ± 0.49 (7)

22.32 ± 5.06 (25)

93.54 ± 0.57

F

Y

10-01

1–13

4.54 ± 0.66 (13)

21.97 ± 5.48 (59)

93.08 ± 1.26

F

N

10-02

2–23

4.64 ± 0.58 (22)

14.38 ± 4.09 (101)

95.42 ± 0.73

F

Y

10-03

13–20

4.75 ± 0.71 (8)

23.56 ± 8.94 (36)

92.27 ± 1.60

F

Y

10-04

19–27

4.89 ± 0.78 (9)

22.37 ± 7.4 (43)

92.42 ± 0.91

H

Y

10-05

17–26

5.30 ± 0.82 (10)

20.55 ± 5.71 (52)

92.58 ± 1.17

H

N

13-01

2–16

4.41 ± 0.79 (15)

21.09 ± 7.38 (52)

93.29 ± 1.91

H

Y

13-02

7–18

4.45 ± 0.52 (11)

23.6 ± 9.36 (10)

93.08 ± 2.65

F

Y

13-03

15–24

5.18 ± 0.60 (11)

19.86 ± 8.8 (43)

93.02 ± 1.68

H

N

14-01

10–20

4.15 ± 0.69 (11)

18.28 ± 5.78 (39)

94.56 ± 1.48

H

Y

14-02

3–12

5.90 ± 0.88 (10)

18.71 ± 9.61 (45)

92.32 ± 1.76

H

Y

15-01

2–8

4.29 ± 0.49 (7)

17.64 ± 4.93 (28)

94.85 ± 0.86

H

Y

16-01

19–25

6.00 ± 0.76 (7)

18.21 ± 7.56 (29)

92.96 ± 1.29

H

Y

16-02

2–25

6.13 ± 0.85 (24)

16.24 ± 7.51 (109)

93.53 ± 1.81

H

N

16-03

14–25

4.33 ± 0.49 (12)

16.28 ± 4.22 (36)

95.21 ± 0.71

H

Y

  1. aMean ± SD (n), n was days excluding those disturbed by research action and irregular recesses
  2. bMean ± SD (n), n was recesses excluding those missing record of female going out or coming back
  3. cMean ± SD, n (constancy) = n (number of daily recesses), nest constancy = (1440 min − t (female staying out of nest)/1440 min) × 100%
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Avian Research

ISSN: 2053-7166