In a earlier post i mentioned that marsh frogs were out competing our native frogs but after i had a walk along the royal military canal in kent found a healthy population of both common and marsh frogs there. it also seems that the local grass snakes have greatly benefited from the marsh frogs as a extra food source!
I'm not advocating the release of non native species at all but it seems these little frogs actually benefit a lot or our wildlife including some of the rarer species.
i took a trip to dungeness in Kent and its no coincidence that the bitterns breeding there, purple herons showing up and other amphibian loving birds all do very well at this site because of the marsh frogs for a food source.
even in romney marsh where rare species like medical leeches and great crested newts can be found are benefiting from the marsh frogs with the leeches sucking there blood and newts eating the tadpoles.
so from the bottom of my heart sorry marsh frogs!...
... but not to sorry they still have the potential to spread Chytrid a deadly amphibian fungus and at the end of day shouldn't be in Britain but if they are here may as well enjoy them!