Scientists keep watch on herds by satellite; FARM & COUNTRY.
The blue grey and beef shorthorn cows are being fitted with electronic collars containing a Global Positioning System.
The equipment - more commonly used to study wild animals - will be able to pinpoint the exact position of the cattle at any one time.
As well as helping farmers to improve livestock management, conservationists hope to assess the impact that cows have on the local ecology.
Electronic tags on Yorkshire cattle (above) and Blinky, the four-eyed, two-mouths calf