Table 1.

Summary of classification accuracies for random forest classifiers including various subsets of short- and long-beaked common dolphin (Delphinus delphis and D. bairdii, respectively) whistles calculated using the randomForest package in R.

	number of whistles	classification accuracy (%)
RF1: all whistles
long-beaked	872	70.3
short-beaked	872	67.2
total	1744	68.7
RF2: whistles belonging to species-specific types (multiple encounters)
long-beaked	101	88.1
short-beaked	101	87
total	202	87.5
RF3: whistles belonging to shared types
long-beaked	619	62.7
short-beaked	619	65.4
total	1238	64.1
RF4: whistles belonging to single-encounter types
long-beaked	111	77
short-beaked	111	71.2
total	222	74.5