Table 1 Taxon identifiers, behavioural, ecological, and life-history variables used in the analysis, in addition to GenBank accession numbers

Alca torda

Razorbill

AJ242683

35

5.44

95.70

1

0

1

0

Alle alle

Dovekie

AJ242684

29

3.12

31.30

1

1

1

0

Uria aalge

Common murre

AJ242686

33

2.92

110.80

1

0

1

1

U. lomvia

Thick-billed murre

AJ242687

33

3.01

107.80

1

1

1

1

Synthliboramphus wumizusume

Japanese murrelet

U37306

31

4.63

36.60

2

1

0

0

S. antiquus

Ancient murrelet

U37303

34

6.99

44.80

2

1

0

0

S. hypoleucus

Xantus' murrelet

U37305

34

7.58

37.20

2

1

0

0

Cepphus carbo

Spectacled guillemot

U37292

27

-1.24

65.10

2

0

1

0

C. Columba

Pigeon guillemot

U37293

28

0.20

57.00

2

0

1

0

C. grille

Black guillemot

AJ242688

29

1.77

47.90

2

0

1

0

Brachyramphus marmoratus

Marbled murrelet

U63055

29

2.47

38.50

1

0

0

1

Ptychoramphus aleuticus

Cassin's auklet

U37302

39

13.33

29.20

1

1

0

0

Aethia pusilla

Least auklet

U37104

30

5.66

18.70

1

1

1

0

A. cristatella

Crested auklet

U37087

34

7.66

36.30

1

1

1

0

Cyclorrhynchus psittacula

Parakeet auklet

U37296

35

8.55

37.60

1

1

1

0

Cerorhinca monocerata

Rhinoceros auklet

U37295

45

16.10

79.20

1

1

0

0

Fratercula corniculata

Horned puffin

U37299

40

11.24

75.90

1

1

1

0

F. arctica

Atlantic puffin

U37297

41

12.52

70.00

1

1

1

0

F. cirrhata

Tufted puffin

U37298

44

14.65

90.00

1

1

1

0

Aptenodytes forsteri

Emperor penguin

DQ137225

64

28.32

465.00

1

1

1

1

A. patagonicus

King penguin

AY139623

54

20.00

310.00

1

1

1

1

Eudyptula minor

Little blue penguin

NC_004538

34.7

7.14

53.00

2

0

1

0

Eudyptes chrysocome

Rockhopper penguin

AF076051

34

3.68

118.40

2

1

1

1

E. chrysolophus

Macaroni penguin

AF076052

35.45

4.28

149.46

2

1

1

1

E. pachyrhynchus

Fiordland penguin

DQ137210

33.5

3.18

118.40

2

0

1

1

E. sclateri

Erect-crested penguin

DQ137209

35

3.80

150.70

2

-

1

1

Pygoscelis adeliae

Adelie penguin

GQ925801

33

2.63

120.10

2

0

1

1

P. Antarctica

Chinstrap penguin

AF076089

34

3.81

114.10

2

0

1

1

P. papua

Gentoo penguin

AF076090

35

4.42

127.08

2

0

1

1

Spheniscus demersus

Black-footed penguin

DQ137217

38

8.05

106.80

2

0

1

0

S. humboldti

Peruvian penguin

AY567916

40.7

10.18

125.00

2

0

1

0

S. magellanicus

Magellanic penguin

DQ137218

41.2

10.65

126.25

2

0

1

0

Megadyptes antipodes

Yellow-eyed penguin

DQ137224

43.5

12.64

137.20

2

-

1

1