Table 5 Distribution and activity parameters of Blue Petrels, Thin-billed prions and Antarctic Prions from Kerguelen Islands during the first incubation trip

First incubation trip: N

0

7

6

7

4

 Mean distance to colony (km)

–

1158 ± 334

944 ± 40

1067 ± 104

1066 ± 75

F_2,32 = 0.9, P = 0.416

F_1,32 = 0.9, P = 0.355

 Max. distance to colony (km)

–

1840 ± 505

1256 ± 123

1544 ± 163

1608 ± 165

F_2,32 = 2.7, P = 0.091

F_1,32 = 0.5, P = 0.500

 Mean longitude (°E)

–

77.3 ± 13.9

66.5 ± 9.8

76.1 ± 5.2

74.5 ± 5.6

F_2,32 = 2.9, P = 0.082

F_1,32 = 0.1, P = 0.753

 Mean latitude (°S)

–

52.9 ± 1.2

54.4 ± 2.2

56.8 ± 1.8

57.0 ± 0.5

F_2,32 = 6.2,P = 0.009

F_1,32 = 0.3, P = 0.618

 Time foraging (hours)

–

15.0 ± 2.6

17.6 ± 1.2

15.2 ± 0.9

15.1 ± 1.1

F_2,32 = 3.6,P = 0.048

F_1,32 < 0.1, P = 0.976

  - During daytime

–

9.8 ± 1.6

11.5 ± 0.6

10.2 ± 0.8

10.3 ± 1.1

F_2,32 = 3.9,P = 0.039

F_1,32 = 0.2, P = 0.672

  - During night time

–

4.5 ± 1.0

3.7 ± 1.8

1.1 ± 0.9

0.7 ± 0.2

F_2,32 = 11.5,P < 0.001

F_1,32 = 0.3, P = 0.598

  - During dusk

–

1.0 ± 0.2

2.8 ± 1.2

3.8 ± 0.8

4.0 ± 0.5

F_2,32 = 19.8,P < 0.001

F_1,32 = 0.1, P = 0.750

  - During dawn

–

0.1 ± 0.1

0

0

0

F_2,32 = 2.6, P = 0.106

F_1,32 = 0.9, P = 0.350

 Time in flight (hours)

–

8.5 ± 2.5

5.2 ± 1.3

7.5 ± 0.8

7.7 ± 1.5

F_2,32 = 5.1,P = 0.017

F_1,32 < 0.1, P = 0.916

 Time on water (hours)

–

0.5 ± 0.2

1.0 ± 0.6

1.3 ± 0.4

1.2 ± 0.5

F_2,32 = 4.2,P = 0.032

F_1,32 < 0.1, P = 0.972