Table 1.

Call-type categories used, their abbreviation codes, proposed function and sample sizes in the dataset.

call category	call code	function/emission context	comprising call types	number of identified calls
close call	cc	group cohesion, foraging [36,37]	cc and hybrid cc	47 083
short note	sn	appeasing, sentinel, sunning [32,33]	sn and hybrid sn	15 048
social call	soc	begging, general social interaction [34,45]	soc and hybrid soc	3143
aggression call	agg	physical conflict [34]	agg and chat	1807
move call	mo	movement speed, sentinel [46]	mo and hybrid mo	1650
alarm	al	predator alarm [33,47]	aerial and terrestrial al	1605
lead call	ld	movement initiation [34,48]	ld and hybrid ld	459
unknown	ukn		unidentified calls	248