This is a short article on diversity of Grallaricula songs, mostly as an example of what one can do with these Features on xeno-canto. First some images:
Xeno-canto currently holds about 100 recordings of Grallaricula antpittas. The only species not on file yet are Hooded and Peruvian Antpittas. The map below shows that all species are restricted to the Andes.
Browsing through the recordings of this genus of antpittas, one can see basically two types of song. First there are several species with songs consisting of series of about 20 or so notes, which usually rise or fall in pitch.
[[XC3904 XC6857 XC5060 XC6858 XC17214]]
The other main song type is of a single short descending call note:
[[XC3424 XC5061 XC14300]]
A few recordings do not fall into either categories. First, there is a recording of an isolated population of G. nana pariae from northern Venezuela:
Second, also Rusty-breasted Antpittas sometimes use a call which is short but made of multiple notes.
[[20563 23641 47176]]
Finally, just as an example, a map showing the diversity per country of Grallaricula species.