Aww, I have a resident mouse at the allotment. Never done any harm to me so won't be doing any harm to her. Only ever seen the one...and one little home. Had it years now and never been a bother to myself or my crops.
Mice are often a problem to gardeners, digging up seeds and eating seedlings for a start. My winter onions were almost entirely eaten from 150 to now about 30. Although that was probably because of the long cold winter we're still coming out of.
It's up to you how you deal with them really, maybe if you can identify the species you'll be able to work out whether it'll be a problem for you. I suspect though, you will probably have to do something about it (and I admire people who say there's just one for their optimism).
Your right, there probably is loads about. But I don't feel the need to keep killing wildlife. It's the local cat population that are the troublesome ones - dirty and messy.
It's probably due to the local cat population that you've only got one!
Haha you could be right SwissSue.
Thanks everyone for your advice, at the moment my onions are still intact though a few have been disturbed by the mice digging holes thinking of putting some humane traps down and removing them from the area.
I have a creche for voles in my composter. I think the unit must have raised about 10 generations since I put the composter in place. To be fair I love the fact I have a huge variety of wildlife in my garden including the resident toad who rests under the discarded base of the said composter.
You'll be surprised to learn that birds are the culprits, when it comes to the disturbance of onions and sudden little holes.
Aww, wish I had a resident toad - they're quite cool ! Got loads of frogs and newts like.
We too have lots of wildlife in the garden, frogs, newts a variety of birds, dragonflies and damselflies too. We have always had mice in the garden feeding on peanuts and hazelnuts from the twisted hazel. I'm new to vegetable growing and would hate my efforts to be in vain hence the need for advice. Interestingly they haven't been anywhere near my composter