Table 2.

Number of each vocalizing group (with number of sounds in parentheses) using “grumbles” and/or “wop” in their repertoire as they traversed the study site

	Grumbles (42 groups)	Wops (34 groups)
Group social behavior
Single-adult non-interacting groups	7 (25)	9 (28)
Multiple-adult non-interacting groups	13 (60)	11 (58)
Singer-join	9 (36)	6 (26)
Non-singer-join	13 (52)	8 (48)
Nearest singer
Joined	9 (36)	6 (26)
Within 2.5 km	8 (34)	6 (30)
Between 2.5 and 5 km	8 (23)	7 (28)
Beyond 5 km	17 (80)	15 (76)
Nearest neighbor
Within 2.5 km	19 (87)	17 (72)
Between 2.5 and 5 km	6 (25)	6 (22)
Beyond 5 km	17 (61)	11 (66)

These vocalizing groups were categorized into four different social behaviors and then re-categorized according to the distance of the nearest singing whale and nearest non-singing group