marsh frog pelophylax ridibundus pond with inflated vocal sacs either side its head

navigate by keyword : amphibian amplify animal april 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 ridibundus rivals sacs side skin sound spring summer sussex swamp used vocal voice warn water west wet white wild wildlife yellow

Marsh frog Pelophylax ridibundus in a pond with inflated vocal sacs on either side of its head Royalty Free Stock Photo
Marsh frog Pelophylax ridibundus in a pond with inflated vocal sacs on either side of its head Royalty Free Stock Photo
   
   
   
   
   
Marsh frog Pelophylax ridibundus in a pond with inflated vocal sacs on either side of its head
   
   
   
   
   
   
   
Marsh frog Pelophylax ridibundus 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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