7skipper7's picture

Field Mouse

Observed: 26th June 2007 By: 7skipper7
Field Mouse
fieldmouse (4) (800x683)
Description:

Took this ages ago. I think it is field mouse but not sure.

Identifications
Species interactions

No interactions present.

Comments

dejayM's picture

Apodemus sylvaticus

Yes, long-tailed field mouse. Look after them as well as the birds.

adrianashley's picture

Apodemus Sylvaticus

Other common name is a Wood Mouse.

DebbieA's picture

Cheeky wood mouse -

This is an interesting photo of a wood mouse as you don't often see them too far off the ground!

Debbie Alston

Gill Sinclair's picture

Revise ID

Jane/Derek/Adrian - someone add a revised ID for wood mouse Apodemus sylvaticus and then people can agree with that.
BTW could have been yellow-necked mouse in this location too, but I think the second photo shows there's no shoulder-to-shoulder band of darker fur.

Gill Sinclair
OU Certificate in Contemporary Science
www.gillsinclair.net
Twitter @Gill_Sinclair

adrianashley's picture

Yellow-necked mice

Hi Gill, can you give me a few key differences between wood mice and yellow-necked mice?
Thanks.

Gill Sinclair's picture

Differences between species

Hi Adrian

The two species are difficult to distinguish, but the easy 'knock-out' question for the yellow-necked mouse is often the location (have a look on the NBN Gateway maps) - wood mice are widely distributed throughout England, Wales & Scotland whereas the yellow-necked has a much more restricted distribution.

The yellow-necked is larger than the wood, but with such a small animal it's often difficult to get a good sense of scale and of course juveniles and 'atypical' individuals can invalidate that comparison anyway.

In terms of colour, the 'brown' on a wood mouse may be more reddish, but the difference isn't that great and again individuals may show colour variations.

So if the animal is sighted somewhere that is within the range of both species, the only definite way to tell is if you get a good view of the neck/chest markings. Yellow-necked mice havea continuous band of brown from shoulder to shoulder (see reluctantly obliging mouse at http://www.ispot.org.uk/node/238018) whereas in wood mice there is only a spot or short vertical stripe of brown, sometimes likened to a clip-on tie.

Which is why, if the chest markings can't be seen from the photo and both species could be present at that location, we tend to just say 'Apodemus species'.
But I think the side view of the mouse in the second photo suggests no band of brown from shoulder to shoulder?

Gill Sinclair
OU Certificate in Contemporary Science
www.gillsinclair.net
Twitter @Gill_Sinclair

adrianashley's picture

Thank you for the description and the link

Hi Gill,
Thank you for the description and the link. I’m now pleased to say I almost certainly have seen a yellow-necked mouse and even have a photo somewhere on my camera. I’ll see if I can find and upload it to ispot tomorrow.

dejayM's picture

Proper ID

Yes, Gill, done.
I am beginning to see how important this is.

I see this subject has come up before
http://www.ispot.org.uk/node/155576
And now you have given some clues reagrding distribution we need to be cautious.
But is it possible someone has a picture showing the Yellow-necked ID features?
Oh....heres some..
http://www.ispot.org.uk/node/299965

moongirl01's picture

Lovely photos!

Thanks for sharing the photos! It's good to see that the resourceful mouse was taking advantage of a good food supply.