Welcome to the Grass Snake Hotel

With any conservation project the amount of work that can be completed is directly proportional to the hard work and dedication of the volunteers. The building of one Snake Hibernacula was ambitious to build two was going to be difficult but achievable. Therefore in planning what work was needed to be done, two days were allocated to this project.

One of the greatest difficulties was always likely to be that the ground where the pits needed to be dug. As this is a woodland area, that meant digging through tree roots, and anyone who has done any gardening near trees, will know, this is never easy. However, we are blessed with a light sandy soil down by the river, therefore digging would not be as bad as it could be. Thus a balance was there and fortunately on the day the unseasonably good weather held up making the work easier to carry out. While it was still hard work as more than one tonne of soil had to be dug out of each pit, the pits were quickly created.

The pits are made two meters by two meters and about forty centimetres deep, with a slope to wards the south. That way they can drain and will stop them becoming frost pockets. These pits are then filled with logs that are at least twenty centimetres across and laid crossways on two layers. This creates an area of air that is warmer than the ambient air temperature, and even if this log filled pit becomes water logged, that water will not lead to the air within the hibernacula freezing, therefore not harming or killing the snakes inside.



Those logs bring the pit back up to the ground level; at this point the actual accommodation is constructed. This is made up of smaller branches, from ten centimetres down to twigs, stacked so they are in an east west orientation. The orientation again is important so that at sunrise in particular, and less so at sunset, the sun warms the branches at the entrances so that the air temperature is kept higher than the ambient air temperature and frost-free. This stack is built up so that its about eighty centimetres from the ground. All the spaces in this pile are there so that the snakes can find cosy places to sleep out the winter free from predation or disturbance.




Then an insulation layer is put on the logs. While turf would be ideal, as Chopwell wood doesn’t have great swathes of grass anywhere, we used bracken something we do have lots of. Often it is a matter of making minor adjustments and using the materials available, rather than not doing something because you don’t have what’s ideal. Therefore with the logs insulated the soil from the pits is used to cover the hibernacula, leaving the East and West sides open.



The volunteers worked their socks off, and two hibernaculums were completed in a day rather than the two days expected. Friends of Chopwell Wood, and the Durham Biodiversity Action, were really lucky to have had such hardworking and dedicated volunteers. Thanks folks, and I am sure that the Grass snakes will send their thanks too.

All we need to do now is find the tenants!
So to all you grass snakes out there, free accommodation.
(We don’t mind if the Grass Snakes are Squatters either)
Beautiful Location

Enhancing Biodiversity

This weekend the Mouse is going to be busy helping to build not one, but two, Grass Snake Hibernacula in the wood. While climate change may be bringing new species further north, we are at the northern limit of the normal range for Grass Snakes. Unfortunately there has been a decline in the population in recent years due mainly to a loss of habitat. All those overly tidy gardens, spraying of herbicide and modern agricultural practices have all contributed to this. However along the Derwent River, there is an opportunity to reverse this decline by enhancing the habitat for the Grass snake.

Many of the elements are already there including the snakes, it is just a matter of managing the area so that it enables these reptiles to maintain a strong belly hold.

The area that the Grass Snake hotels are to be built in has already had some coppicing work done, this opens the area up to the sunlight and will provide the basking areas the snakes need so that they can raise there temperatures, being cold blooded this is vital to their survival. The fact that the area where the Hibernacula are to be constructed is an area that has to be coppiced regularly is all part of the careful planning and long term viability of the project. Further, because of the need to create piles of composting vegetation so that the snakes can breed and nest, also helps deal with another problem of the highly invasive Himalayan Balsam. This introduced species has created a large colony that has been smothering out all other plants. By utilising these plants as the material to create the compost heaps has the effect of benefiting the Grass Snakes as well as dealing with the invader.

Therefore, while this work will directly benefit the Grass Snakes, it will also help the native plants to re-establish themselves and benefit many other forms of Fauna and Flora too.

It will not be until next year that we will know if there are any snakes using the hotel, but there are snakes in the area, not just grass snakes but the even more endangered adder as well. All this work could benefit tens of species in the long term, enhancing the ecology of the wood and the river Derwent.



There was an article in the local paper today about the project too, and I understand that local TV will be covering it as well. Fortunately the mouse was in hibernation for this.

Changed Plans and A Long Walk

One of the large coppice stools

While I knew that I had a couple of important errands to run yesterday, I was planning to have a quite day especially as I have a load of washing to do. One of the problems with living a truly “Green” lifestyle and being so involved with practical conservation is that my clothes do get mucky. Therefore I needed some time to get my washing done. I don’t have a washing machine so it’s all done by hand. Rather old fashioned but effective. However, I got a call from the Ranger as the Forestry Commission Crew had been in that morning and had coppiced the large trees down where the Friends’ are building the Grass Snake hotels. As I seem to have become by default the task leader on this project, I needed to check to see if there was anything else that the FoCW needed done while the crew were still around.

Therefore, I had to adjust my plans and go and visit the site. As building these Grass Snake Hotels, Hibernacula, is a big project and we are relying upon volunteers, we need to keep a sensible balance in providing work that is interesting yet achievable. Had we left the large timber there to be coppiced by inexperienced volunteers, far less could have been done as the site lacks the space for twenty plus people to be working and several tonnes of timber getting felled. Also as the volunteers are inexperienced, by making the work interesting with results that they can see occurring, they are more likely to want to continue volunteering and doing their bit for the environment.

Well when I got to the site, the Forestry Commission crew have done a fantastic job. They have left the smaller more manageable trees there, for the conservation volunteers to deal with, but have opened up the area so that we can work on the Hibernacula. None of the wood will be wasted as it will be required for the construction of the grass snake hotels, and what is not used will be corded so that insects and other small animal can use it. None of the trees have been killed, as the coppice stools will regenerate. The site was chosen as the trees there need to be coppiced anyway, and because of that fact the location is perfect for the Hibernacula. It all goes to become a virtuous circle of enhancing habitat.

As my regular reader will know, previously while carrying out a survey of potential bat roost sites, I had shredded my old boots, so on Monday I went out and bought a new pair. I was glad that I had as the site where the Friends of Chopwell Wood are to build the Grass Snake Hotel is not easily accessible. Access is via a steep bank and you need good stout footwear to get on or off the site. Because the tread on my old boots was so worn on the last occasion that I had been to the location I had to slip down on my butt to gain access. This time it was a piece of cake.

The steep valley near the river

As I had needed to alter my plans I decided I would take some time out and relax by taking a nice walk and see what was happening in the wood. With autumn showing its self in the wood, it was possible that I could get some great pictures. I personally love this time of year because of the colours and the way that the wildlife is feverously preparing for winter.