During the period of 2005 to 2008, a study was conducted of amphibians at 25 ponds within the administrative boundaries of Zielona Góra (western Poland) - an agglomeration of 58.32 km2 with a population of 118,000 residents. The ponds chosen for the study were varied by size, location, type of surroundings and origin. A total of 11 species of amphibians were confirmed in the study sites, whereas 14 species can be found in Zielona Gora's environs. The common toad Bufo bufo was the most common species found, while the marsh frog Rana ridibunda was the rarest. Aqueous habitats for amphibians are decreasing, especially those with standing water and wetlands. This is mostly due to increasing infrastructure development, the filling of aquifers with land or using them as trash dumps, as well as their eutrophication and desiccation.