Fears for frogs after icy weather in Herefordshire
Conservationists fear that hundreds of frogs may have been killed during the recent cold snap.
Nigel Hand, of Herefordshire Amphibian and Reptile Team (Hart), said many dead frogs were being found in ponds.
He said ice on top of ponds for long periods as well as short, dark days had created problems for frogs.
Mr Hand asked people to pass on information so Hart could gauge how widespread the problem was in Herefordshire and Worcestershire.
He said: "We had that cold spell just before Christmas where we had ice on top of ponds for a long period.
"Also the days were very short and very dark and this reduces photosynthesis in the pond and, with ice on top, gasses build up from decomposing vegetation and it causes problems for the frogs there."
He said frogs were an important part of the garden food chain as they ate insects and slugs.
Mr Hand said that frogs across the world had also been hit by pollution and fungal diseases.