Hello never posted in gardening before but I need some help and this seemed the best option. It's more a wildlife mystery but it is happening in our garden.
Parts of our garden are extremely neglected/au natural - its on the list of big DIY jobs to do this year and if you imagine a big fat L shape we have the local (freshwater) millstream on the longest border of the garden.
The bank to the stream is quite steep and having cleared it of prickly brambles last year its mainly covered in nettles but accessible with caution.
Last week we noticed holes appearing in the bank which definately weren't there before - there's about 7 in total which look animal made rather than natural erosion and are about fist sized. I've had a good peer and they look tunnelish.
My first thought was rats but we haven't seen any sightings or any droppings at all and having done some googling they prefer stagnant water.
Any ideas? Is there an outside chance it might be water voles? and what should/shouldn't we be doing?
Many thanks