marsh frog pelophylax ridibundus pond with inflated vocal sacs either side its head |
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| navigate by keyword : amphibian amplify animal april aquatic attract balloons brown call close closeup countryside day ears either environment expanded eyes fauna filled frog garden green head inflate inflated its leaves male marsh mates mating mouth natural nature noise outdoor pelophylax people pictured pond puffed ridibundus rivals sacs side skin sound spring summer sussex swamp swimming used vocal voice warn water west wet white wild wildlife yellow |
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| Marsh frog Pelophylax ridibundus swimming in a pond with inflated vocal sacs on either side of its head used to amplify its sound to attract mates or warn rivals. Pictured in April in West Sussex countryside |
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