Table 1: Comparison of the songs in Part I that are a trill or churr, tempo is steady, and: (1) pitch falls, song is composed of one trill or churr; (2) pitch is steady, song trills, song is composed of one trill, each trill lasts 1 sec or less; or (3) pitch is steady, song churrs, song is composed of one churr.

Species Pitch rises and falls (RF), falls (F), or is steady (S) Trill (T) or churr (C) Relative pitch (1–5; 1 = lowest) Relative sharpness (1–5; 1 = least) Relative “spoken-ness” (1–5; 1 = least)
Spotted Antbird S T 3 4 1
Dusky Antbird RF C 3 1 4
Chestnut-backed Antbird RF C 4 1 5
Bicolored Antbird F C 1 3 4
Ocellated Antbird F T 5 5 1
Southern Bentbill (burry) F C 2 1 3
Southern Bentbill (trilly) F T 5 1 1
Black-capped Pygmy-Tyrant S T 5 1 1
Olivaceous Flatbill S T 4 3 1
Red-capped Manakin S C 2 3 1
Black-bellied Wren F C 3 1 4
White-breasted Wood-Wren (more spoken) S C 5 5 3
White-breasted Wood-Wren (less spoken) S C 3 4 1