Głosy ptaków

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http://www.scricciolo.com/eurosongs/canti.htm

http://www.xeno-canto.org/

http://animal.memozee.com/animal/SOUND/

http://www.owlpages.com/sounds.php

http://www.mbr-pwrc.usgs.gov/id/songwav.html

http://www.glosy-ptakow.pl/