CLAUDE NURIDSANY & MARIE PERENNOU / SCIENCE PHOTO LIBRARY CLAUDE NURIDSANY & MARIE PERENNOU / SCIENCE PHOTO LIBRARY
The European edible frog, Rana esculenta, croaking, with its twin vocal sacs inflated. The sacs are used as a resonant cavity to increase the volume of the call. R. esculenta is found throughout Europe. Although not native to Britian, it has been introduced by man and several colonies exist.
Model release not required. Property release not required.