London Wildlife Trust has been carrying out a survey of small mammals in West London with the help of volunteers. The status of such animals is not well known because they hide away and some only come out at night.
Two sites are in the Brent River Park – Tentelow Wood and Long Wood – and we now have results from the first couple of months of surveying.
In Tentelow Wood, wood mouse ( http://www.wildlifetrusts.org/species/wood-mouse ), bank vole (http://www.wildlifetrusts.org/species/bank-vole ) and common shrew (http://www.wildlifetrusts.org/species/common-shrew ) were found. Wood mouse is ubiquitous but bank vole and common shrew are more patchily distributed.
In Long Wood, wood mouse and bank vole were also found, but so was the yellow-necked mouse. ( http://www.mammal.org.uk/species-factsheets/Yellow-necked%20mouse ). The yellow-necked mouse is a remarkable find because there do not seem to be any previous records for miles around. (It is however, hard to distinguish from the wood mouse so it may be more common than records suggest.)
Yellow necked mouse
The third site surveyed in the borough of Ealing, though not in the BRP, is Perivale Wood (http://www.perivalewood.k-hosting.co.uk/ ). Only wood mice were found, although field voles and common shrews have been recorded previously.