Table 1 Bird species diversity and the basic parameters of bird–habitat network in each habitat on Dong Island, South China Sea

Bird species (%)

36 (63.16)

22 (38.60)

17 (29.82)

19 (33.33)

9 (15.79)

Resident birds (%)

12 (60)

13 (65)

5 (25)

13 (65)

5 (25)

Migrant birds (%)

24 (64.86)

9 (24.32)

12 (32.43)

6 (16.22)

4 (10.81)

Shannon–Wiener diversity index

2.86

0.41

2.43

2.27

0.58

Pielou uniformity index

0.80

0.13

0.86

0.77

0.26

Habitat strength

22.78

12.87

6.39

12.27

2.68

Interaction asymmetry

0.61

0.54

0.32

0.59

0.19

Nested rank

0

0.25

0.75

0.5

1

Specificity index

0.25

0.92

0.32

0.37

0.88