www.natuurgeluid.nl - The Club for Nature Sounds Registration was founded on March 28, 1987, as a small national club of amateurs and professionals interested in recording nature sounds.
http://www.xeno-canto.org - a website dedicated to the bird sounds of the world. Listen and discover the sounds in the collection. xeno-canto is for anyone with an interest in bird sounds: for scientists, for bird watchers or for simply interested people.
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