Find a small, tightly lidded box with ventilation holes and line with newspaper.
Add some torn up strips of kitchen roll or soft tissue for the mouse to hide under.
A cardboard roll from the centre of a toilet roll with strips of soft tissue pushed inside is always popular!
Provide a little food (small seeds, bread, piece of apple, muesli) and a tiny plastic bottle lid of water.
Leave in a quiet, dark, warm place for about an hour to recover from shock.
Were there obvious injuries? If so, take to a rescue centre for a check up.
If no injuries are seen and the mouse is getting livelier, leave in the box for another few hours or overnight and check again.
If unharmed and moving well, it can be released under a dense hedge or in a woodpile
Leave a small handful of seeds to give it time to find a new home.

If the babies are very tiny, try reconstructing the nest and give the mother a chance to return to them.

Their eyes open at about 12 days so they will soon be independent and you can move the old nest out then.
If the mother doesn't come back after about an hour, put some hot water in a screw capped plastic bottle,
wrap it in an old sock or piece of towel and place next to the nest to keep the babies warm.
If she still hasn't returned to feed them after 3 hours, they will have to be reared at a rescue centre.

Rearing baby mice at home is very labour intensive and is not recommended.
They need to be housed in a plastic vivarium tank inside an incubator or on a heat pad, to keep them at a regular temperature until their eyes are open.
They will need to have tiny, hourly feeds of Esbilac or Cimicat with a tiny dropper from 6am until 12 midnight until their eyes open and weaning can begin.
Before and after every meal they will need gentle toileting.

For advice on feeding go to:     New orphans
Rescue Centres