A Soay sheep on the island of Hirta, St Kilda archipelago, Scotland. Photo by Martin Stoffel. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to ...

St Kilda's field mice can grow to twice the size ... though some have previously been seen feeding on the carcasses of the island's Soay sheep. The archipelago's huge seabird colonies could ...