More than 600 dead seabirds have now been found on Jersey's beaches, wildlife experts have confirmed.
The National Trust for Jersey organised a second count on Sunday to track the impact of recent storms.
For the second week about 130 birds were discovered dead. Experts put this down to them struggling for food in heavy wind and rain.
Wildlife experts are calling for the Channel Island governments to work to assess the scale of bird loss.
Dozens of volunteers answered a call to scour the island's coast on Sunday to collect some of the hundreds of dead birds which have washed up during the extreme weather early in February.
Cris Sellares, from the National Trust, said there were a total of 136 birds found and some specimens, such as local shags, an oiled razorbill, a kittiwake and some puffins were saved for post-mortem analysis.
She said: "It is one storm after another, after another, they can't feed in this weather, they get weak
"The impact of this storm will be felt across the UK and particularly our local birds like the shags. I think we will need to do a full review of the health of our breeding population this year."