Table 1. Composition of the database used in the experiments.

The number of audio files and syllables per bird species are indicated.

Class	Bird species	No. of audio files	No. of syllables
1	Aramides cajanea [ac]	64	3098
2	Coereba flaveola [cf]	201	5039
3	Colibri thalassinus [ct]	131	4541
4	Crypturellus cinereus [cc]	94	1200
5	Crypturellus obsoletus [co]	87	1518
6	Crypturellus soui [cs]	100	1012
7	Crypturellus undulatus [cu]	68	659
8	Lathrotriccus euleri [le]	120	1723
9	Piranga olivacea [po]	64	1273
10	Piranga rubra [pr]	72	1790
11	Rupornis magnirostris [rm]	181	2802
12	Synallaxis azarae [sa]	134	3181
Total		1,316	27,836