Distress call of (European) Swift

["Serge Le Huitouze" slehuitouze]

Hi there,

Just wanted to relay a "call for sound" that I saw on a French birding list=
.

Someone from the French civil aviation authority (DGAC) is seeking
distress calls recordings of Common Swift (Apus apus), in order
to try and limit mortality near airports.

If someone around has such a thing, I'm more than willing to serve as a
contact so as this experiment can be made.


All the best (recordings).

--Serge