one of three caught in my kitchen. Moved in beacuse of the floods.
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I thought I'd post this as we have only had one other house mouse, a baby, on iSpot.
This is a rarity for me being the first house mice I've caught in my house in 10 years. We usually catch short-tailed field voles or wood mice (once had a family of 13 plus mum wood mice - it took a week and 30 traps to catch the lot) - the price you pay for living on the edge of the countryside and next to a river.
I didn't measure these animals as I used my viewing tank so my 3 year old son could have a good look. However, I estimate all three females were young animals.
You can tell it is a house mouse by the dark colouration and the paler, though still dirty looking underside. A wood mouse would have had a clean, almost white underside.
It is a female because its 'diddly bits' are close together, in a male they would be at least twice as far apart.
I only use live traps (Longworths) and I usuall trim a small piece of fur to give each a unique mark. I then release them a few hundred yards away, by the river Derwent. I worked out how far I needed to release them by marking the animals and gradually releasing them a little further away each time then recording if they returned or not.
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How far away do you need to release them to stop them coming back? (I would like to know for practical reasons!) We have a barn over the other side of our back wall, so often have little visitors when it gets cold.
I find 300 metres is enough. However, that includes them crossing a small allotment and a road. The road was no problem to them returning but the allotment seems to deter them for some strange reason. I have released animals just the other side of the allotments, around 100 metres, and only one out of 8 returned.
Perhaps the allotment acts as a distraction, there being so much food there for them. I did the same experiment on an island many years ago and found the animals had to be released almost half a mile away, but that was on rabbit grazed grassland with no trees or other barriers/distractions.
Thank you. We don't have any adequate distractions close enough to tempt then away from the house and chicken run, so half a mile it will be!
Lat/Lng: 54.1, -0.8
OS grid ref: SE7972