69. Notes on the vocalizations of Giant Antpitta (Grallaria gigantea), Great Antpitta (Grallaria excelsa) and Undulated Antpitta (Grallaria squamigera)

In the following we briefly analyze and compare voice of the different races of Giant Antpitta (Grallaria gigantea), Great Antpitta (Grallaria excelsa) and Undulated Antpitta (Grallaria squamigera). We also try to quantify the extent of any vocal differences using the criteria proposed by Tobias et al. (2010), as a support for taxonomic review. We have made use of sound recordings available on-line from Xeno Canto (XC) and Macaulay Library (ML).