13' 44.1" N 25° 57' 23.9" E 22
song from dry, barren crown of a hillside c360m.
composed of long strophes of up to 25 secs begining
with a short, sharp, downslurred whistle element, repeated
in single or double phrases, before terminating in a crescendo
of more complex phrases consisting of wheezes, hisses
and harder 'chack' and 'churr' elements. This bird uttered
all strophes during aerial display flights.