FIGURES 21–23 in A new species of Formicivora antwren from the Chapada Diamantina, eastern Brazil (Aves: Passeriformes: Thamnophilidae)

FIGURES 21–23. Distress call of: 21, Formicivora grantsaui sp. nov., two consecutive whistles (ASEC 10615, from the holotype); 22, F. g r i s e a, two consecutive whistles (JMCS 07/39); 23, F. r u f a, a complete trill (ASEC 3184). All recordings made from mist-netted birds. (window function Blackman, amplitude logarithmic, window size 533 samples, overlap 96.2%, DFT size 16384 points).