Marsh Frog (Pelophylax ridibundus)
The marsh frog is not a native species of the United Kingdom, it was introduced to Walland Marsh, Kent in 1935, it is now found in several areas of Kent and East Sussex. Other introductions exist, including colonies in Southwest and West London.
More aquatic in nature than the native common frog, the marsh frog can be difficult to locate, quickly jumping into the water if disturbed.
The true impact of the marsh frog on native herpetofauna has not been established.
KRAG recently received a worrying report that marsh frogs colonising a new pond have caused a dramatic decline in native species that were once common at the site.
If you see marsh frogs and in particular if you have records of marsh frogs colonising a pond where they were previously not present, do let us know.
Until such time that the impact of this species is assessed it is important that no steps are taken to encourage its spread in Kent, such as introducing marsh frog spawn into ponds.