Table 2 Number of calls detected from each vocal class – Low-Frequency-Harmonic (LFH), Noisy Complex (NC), Pulsed (P, and Tonal (T)– and call type for each decade. Sample sizes by vocal class are in bold.

From: Some things never change: multi-decadal stability in humpback whale calling repertoire on Southeast Alaskan foraging grounds

Call Class

Call Type

N

1970’s

1990’s

2000’s

2010’s

LFH

Descending Moan

7

0

1

2

4

Groan

16

8

3

2

3

Growl

220

64

16

39

101

Modulated Moan

10

5

2

0

3

Variable Moan

8

0

3

2

3

Whup

106

35

23

16

32

All LFH

367

112

48

61

146

NC

Ahooga

27

0

20

2

5

Ascending Shriek

19

3

8

3

5

Descending Shriek

11

2

5

0

4

Squeegie

12

0

2

1

9

Trumpet

10

5

1

0

5

All NC

79

10

35

6

28

P

Droplet

74

20

21

23

10

Horse

10

3

3

0

4

Swop

124

41

21

6

56

Teepee

95

63

11

9

12

All P

303

127

56

38

82

T

Feeding (All T)

165

30

17

3

115

Total

All

914

279

156

108

371

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