New visit to see the alien species frog in the Norwegian ecosystem, imported from Poland and set out on the island Finnoy. The creature has now spread all over the island and mixed with the local species. The special thing about this frog is the sound they make. I used a sound recorder to document this. Please visit my blog to hear the sound of these creatures http://kolbjornpedersen.blogspot.no/2012/07/rana-ridibunda.html

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