Ecological Archives E096-147-A1

A. Sanz-Aguilar, R. Jovani, C. J. Melián, R. Pradel, and J. L. Tella. 2015. Multi-event capture–recapture analysis reveals individual foraging specialization in a generalist species. Ecology 96:1650–1660. http://dx.doi.org/10.1890/14-0437.1

Appendix A. Field work details.

Fieldwork data collection details

From October 1st to December 19th 2003 (80 days) 17 ploughed ricefields and 7 dumps were visited 106 and 48 times respectively by two experienced observers (Table A1). Each visit lasted ca. 2–6 hours. The length of the visit was constrained by logistic impositions (e.g., permits in dumps) and the abundance of storks in a given moment at a given site. Storks are easy to locate, are quite tame, and rings are 4 cm in size, so they are very easy to identify at distance. Our aim was to identify as much storks as possible at each sampling occasion. Flocks were from some few individuals to hundreds. In any case, a large proportion of storks in a given moment in a given site were identified. Ploughed ricefields were available during the whole study period. In some large ricefields, ploughing activities occurred in different sectors of the field during different time periods (Table A1). This obviously contributed to a larger number of visits to ricefields as a whole. In any case, the sampling of ricefields and dumps was scattered across the study period, allowing a good coverage of the two habitats (Table A1) and resighting probabilities were modeled taking into account differences among habitats and days (thus correcting the unbalanced number of visits in both habitats)

Table A1. Details on daily numbers of banded storks observed at each locality.

oct 1, 2003

oct 2, 2003

oct 6, 2003

oct 7, 2003

oct 8, 2003

oct 9, 2003

oct 14, 2003

oct 15, 2003

oct 16, 2003

oct 17, 2003

oct 20, 2003

oct 21, 2003

oct 22, 2003

oct 23, 2003

oct 27, 2003

oct 28, 2003

oct 29, 2003

oct 30, 2003

Ricefield 1

8

2

4

Ricefield 2

14

Ricefield 3

4

3

Ricefield 4

5

15

1

38

Ricefield 5

15

15

40

7

13

Ricefield 6

Ricefield 7

Ricefield 8

10

5

8

5

Ricefield 9

2

Ricefield 10

Ricefield 11

14

8

Ricefield 12

6

Ricefield 13

4

4

Ricefield 14

Ricefield 15

1

Ricefield 16

1

1

33

18

1

Ricefield 17

23

Dump 1

1

Dump 2

35

18

Dump 3

1

Dump 4

15

31

25

Dump 5

7

6

Dump 6

Dump 7

Total

15

15

40

25

22

1

6

35

11

15

58

33

12

53

23

64

11

28

Table A1 contd.

 

nov 3, 2003

nov 4, 2003

nov 5, 2003

nov 6, 2003

nov 7, 2003

nov 10, 2003

nov 11, 2003

nov 12, 2003

nov 13, 2003

nov 14, 2003

nov 18, 2003

nov 19, 2003

nov 20, 2003

nov 21, 2003

nov 24, 2003

nov 25, 2003

nov 26, 2003

nov 27, 2003

nov 28, 2003

Ricefield 1

9

5

Ricefield 2

10

Ricefield 3

5

1

9

24

Ricefield 4

14

17

Ricefield 5

2

1

3

10

Ricefield 6

3

89

87

25

Ricefield 7

8

16

Ricefield 8

9

1

21

Ricefield 9

6

22

Ricefield 10

6

Ricefield 11

19

4

16

26

88

64

66

Ricefield 12

13

42

55

31

3

Ricefield 13

4

Ricefield 14

22

9

3

Ricefield 15

9

1

Ricefield 16

3

8

15

Ricefield 17

Dump 1

3

2

10

18

Dump 2

58

81

73

77

Dump 3

5

5

4

Dump 4

19

33

14

10

Dump 5

30

34

46

24

Dump 6

1

Dump 7

Total

25

44

27

8

58

22

73

83

75

133

96

140

97

73

91

138

117

74

77

Table A1 contd.

 

dic 1, 2003

dic 2, 2003

dic 3, 2003

dic 4, 2003

dic 5, 2003

dic 9, 2003

dic 10, 2003

dic 11, 2003

dic 12, 2003

dic 15, 2003

dic 16, 2003

dic 17, 2003

dic 19, 2003

TOTAL

Ricefield 1

28

Ricefield 2

24

Ricefield 3

46

Ricefield 4

90

Ricefield 5

28

24

43

95

73

369

Ricefield 6

204

Ricefield 7

43

67

Ricefield 8

1

60

Ricefield 9

30

Ricefield 10

5

23

1

9

44

Ricefield 11

26

50

60

1

10

6

458

Ricefield 12

18

5

8

181

Ricefield 13

12

Ricefield 14

34

Ricefield 15

11

Ricefield 16

80

Ricefield 17

23

Dump 1

34

38

35

141

Dump 2

1

98

104

545

Dump 3

8

5

4

32

Dump 4

10

10

27

194

Dump 5

41

71

75

334

Dump 6

5

6

12

Dump 7

9

9

Total

55

104

68

83

1

10

82

105

98

108

175

117

104

3028

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