Table 1 Temperature differentials between consecutive days with and without prolonged nocturnal flights while desert crossing, per species and season. Min and Max values reported here are the minimal and maximal estimated temperature differentials. Sample size refers to the number of day pairs.

Autumn

ortolan bunting

1.8 ± 2.9

−3.4/7.5

33

spotted flycatcher

5.9 ± 1.8

2.8/8.6

10

Mediterranean flycatcher

12.0 ± 3.2

6.9/17.1

10

willow warbler

6.4 ± 3.8

0/13.4

17

wood warbler

6.4 ± 2.3

2

nightingale

14.1 ± 4.2

6.8/24.3

26

rufous-tailed scrub-robin

10.8 ± 1.2

2

Spring

ortolan bunting

7.1 ± 2.6

−0.3/12.3

27

spotted flycatcher

8.5 ± 2.1

5.1/12.9

15

Mediterranean flycatcher

11.5 ± 0.2

2

wood warbler

8.8 ± 0.8

2

nightingale

17.6 ± 3.4

13.0/24.3

14

rufous-tailed scrub-robin

16.4 ± 2.1

2