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Table 1 Pairs in 2017 that returned in 2018: migration phenology and 2018 status

From: Pair bonds during the annual cycle of a long-distance migrant, the Arctic Tern (Sterna paradisaea)

Female

Male

2018 status**

Depart diff***

Code

Age*

2017 depart

2018 arrive

code

Age*

2017 depart

2018 arrive

G27

11

9 Aug

4 May

G62

 > 5

7 Aug

11 May

p

‒ 2

G16

10

20 Jul

12 May

G70

17

4 Aug

7 May

p

15a

G33

8

1 Aug

7 May

G31

 > 1

31 Jul

3 May

d

‒ 1

G26

17

17 Jul

4 May

G44

8

4 Aug

3 May

p

18

G65

 > 4

3 Aug

3 May

G40

 > 5

8 Aug

5 May

p

5

G84

 > 4

21 Jul

15 May

G30

15

3 Aug

2 May

d

13

  1. *Age (years) at capture in 2017
  2. **p, paired; d, divorced
  3. ***Difference in days between date of departure of male and female (m-f) in 2017
  4. aBreeding failure in 2017