Smallest of the British rodents weighing only 5 to 11gm. They live up to 18 months feeding mainly on seeds, fruits and bulbs. Occasionally, they eat insects, moss and fungi often caching their food underground for a winter store.
Breeding nests are built high above the ground and are made from woven grass where the female gives birth to 1 to 7 young up to 3 times each year.
The only Old World mammal to have a truly prehensile tails, this means the tail automatically curls around anything it touches to hold them on, such as when they are climbing around on thin stalks and stems of tall grasses.
Our Harvest Mice breeding programme has been amazingly successful over the years. We are delighted to continue working alongside university students and other organisations to make sure one of our tiniest creatures in the UK is fully supported.