Jenn – malmesburynaturalhistory.co.uk

Bat survey in Luckington

Jenn — Fri, 13 Jun 2025 11:04:00 +0000

On the 16th May a group of us went to St Mary with St Ethelbert Church in Luckington to carry out an emergency survey.

This was prompted by the discovery of a rare Lesser Horsehoe bat close by last year and we wanted to know if this was an isolated occurrence or whether there were more in the area. Furthermore, the individual found was a juvenile, suggesting there may be a maternity colony close by.

Within Luckington the church tower looked a probable place for use as a roost with multiple possible entry/exit routes on the tower and roof. We positioned ourselves at 5 points around the church, each group with a bat detector. So with camping chairs and flasks at the ready we waited for the sun to go down….

Luckily we weren’t disappointed. Plenty of bats flitted over our head once dusk hit and we could discern at least a couple of different species by sight – the quick flitting pipstrelle overhead and larger serotines zipping along the hedgerows. We also wandered down to the river and were treated to a beautiful display of Daubenton’s bats skimming low across the water up and down.

We recorded bat calls on a variety of different detectors – EchoMeter Touch 2 Pros which make recordings of the calls and provide suggsted IDs, a basic but reliable heterodyne detctor and Phil Atkins’ (aka ‘Pip Detector’) new “Griff” detectors which turns your phone into a bat detector with the help of a bespoke microphone and some software he has developed. As an aside, Phil has put in an incredible amount of effort to develop affordable bat detectors, which is making bat surveying so much more accessible to all.

We spent some time verifying the calls with the help of Phil Atkins, some auto-ID software(s) and visual checking of the call recordings, and were pleased to confirm the following species: Daubenton’s (Myotis daubentonii), Common pipistrelle (Pipistrellus pipstrellus), Serotine (Eptesicus serotinus), Noctule (Nyctalus noctula), Brown long-eared (Plecotus auritus) and the rarer Barbastelle (Barbastella barbastellus) and Lesser Horseshoe (Rhinolophus hipposideros). Some of the calls are shown below (in order from top to bottom: Common pipstrelle, Daubenton’s and Lesser Horseshoe). All of these records were submitted to the Bat Conservation Trust to help with local and national monitoring efforts.

Strangely enough we didn’t see any bats emerge from the church tower. Therefore, where the Lesser Horseshoes roost remains a mystery we have yet to uncover! However it was still a fantastic night with some excellent species recorded.

We would like to give a huge thanks to St Mary with St Ethelbert Church for allowing us to carry out this survey on their grounds.

Big Garden Birdwatch 2025

Jenn — Thu, 06 Feb 2025 09:22:56 +0000

Living with SwiftsThe Sirens of Summer

Jenn — Sat, 18 May 2024 17:37:49 +0000

On 7^th May 2024 30 people came to Malmesbury Town Hall to hear about Swifts from Sarah Roberts of North Wiltshire Swifts.

Sarah has been involved in bird conservation for over a decade and started North Wiltshire Swifts in 2019 as a specialist project and advice group. Their aim is to preserve and boost existing swift populations in Wiltshire through nest box projects and support others to do so.

As we walked into the Town Hall we were greeted by about five Swifts flying high above us – newly returned to the town.

Sarah gave a really informative and entertaining talk about the ecology of this charismatic bird, how to install Swift boxes and campaign for all new-build homes to have Swift bricks incorporated from the start.

A staggering half of swifts have been lost since 1995 yet the causes are not well known. Suspected causes are climate change (more erratic weather affecting migration and nesting); global declines in insect abundance that have reduced their food source; and loss of nest sites as houses are retrofitted and nest cavities filled in, and old growth veteran trees are lost from our landscapes, reducing natural nesting sites.

However, there is still much we can do to support Malmsbury’s Swifts.

The practical advice, hints and tips that Sarah had to offer on how to carry out a survey and ways to attract the birds to Swift boxes once they are installed will be hugely valuable as we launch our survey in Malmesbury.

She explained that Swifts often arrive in waves, with established breeders arriving earliest in May to return to existing nest sites. Swifts have high site fidelity and will return to the same nest year after year.

Younger individuals that have not yet bred may then arrive in June/July, searching for new nest sites. This is an excellent opportunity to provide new nesting sites, and you can attract Swifts by playing Swifts calls from inside or close to the nest, which should attract their attention.

It may take a few years for a new Swift site to be noticed and occupied, so it is worth persevering.

Photo credit: Neil Parker

There are several useful places to find out more about Swifts, including: different types of nest boxes, ideal locations and how to install them; guidance on Swifts and buildings/development; surveying for Swifts, and wildlife law:

We will also use Swift Awareness Week 29^th June – 7^th July to further promote and support these fantastic birds in our town.

Bats of Malmesburyand the Braydon Forest

Jenn — Mon, 06 May 2024 17:17:13 +0000

We are particularly fond of bats at MDNHS headquarters, with two committee members regularly volunteering with Wiltshire Bat Group. We are fortunate in Wiltshire to be a bat ‘hotspot’ in Britain, hosting almost all of our 17 native breeding bat species.

Back in June 2023 we had a foray around Malmesbury to see what bats could be found in and around the town. We set off on a circular walk, starting at Conygre Mead at dusk where we encountered soprano pipistrelles (Pipistrellus pygmaeus) and common pipistrelles (Pipistrellus pipistrellus) at close quarter flitting above our heads.

Being briefed on bats

We then followed the river to the Bowls Club where we heard tantalising echolocation calls of Serotine(Eptesicus serotinus) and Noctule (Nyctalus noctula) on the bat detectors (as well as picking up the calls of a rat by the river!).

Finally, on our way back to the long stay park we lingered at the bridge at the bottom of Abbey steps and watched with delight as Daubenton’s bats (Myotis daubentonii) skimmed over the surface of the river back and forth under the bridge, dipping down to pluck insects off the surface. Even for seasoned bat watchers this was a thrill!

Take a look at the graphic below… ‘A’ shows the Daubenton’s call as they fed over the water; ‘B’ shows a Noctule flying overhead and ‘C’ is very excited humans squealing with delight!!!

For our second bat event, in February 2024 we hosted Gareth Harris of Wiltshire Bat Group who gave a talk on the Bats of the Braydon Forest to an audience of 34 people. It was fascinating to find out about the bats discovered there and the ongoing research on the topic.

His long-term study, in conjunction with other local bat experts, has showed that 13 bat species are living in the Braydon Forest close to Malmesbury. These include four of Britain’s rarest bats – Bechstein’s, Barbastelle, Lesser Horseshoe and Greater Horseshoe.

Their survey and monitoring efforts are ongoing, some of which you can get involved with through Wiltshire Bat Group.

Following on from the success of our previous bat walk, we will be leading another on 13^th September, with the aim of more comprehensively surveying Malmesbury’s rivers for Daubenton’s bats. Keep an eye out for when we advertise it nearer the time!

Beaver Signs Bonanza!

Jenn — Fri, 19 Apr 2024 00:59:20 +0000

On Saturday 13^th January a group of us went on a walk looking for signs of beavers along the Avon at Malmesbury. The purpose of the walk was to train everyone present on what signs beavers leave behind so that we would all know how to spot them in the future.

We were joined by professional ecologist Gareth Harris from the Wiltshire Mammal Group (and Wiltshire Bat Group but more of that later!). Gareth began the morning with some background ecology of beavers and some unavoidable humour to go with it!

Aided with handouts, photos and a great reference book we learned about beaver behaviour and what signs to look out for.

MDNHS Group 13th January 2024

Continuing along the river, we started to see overhanging willow branches that had clearly been ‘nibbled’ and then, lying next to the water’s edge a branch which had been cleaned of small shoots, the bark at the end had been stripped back slightly and, where it would have joined the main tree, a 45 degree cut with clearly visible tooth marks!

Members were spotting more and more small signs, hazel where one or two shoots had been removed, trunks with ‘scars’ on them where they had been chewed, a shoot with all the bark removed leaving it bright orange which indicated that the beaver had worked on it very recently and then finally, a trunk of a small tree with a clear 45 degree angle and chippings and sawdust scattered around the base.

We could not have had a better result. We now know that in the 2 years since Natural England carried out their research into beavers south of our region, they have travelled as far as Malmesbury and are starting to make this their home. We do not know how many there are and, on the small amount of river we could follow, did not find their lodge.

Beavers are a fully protected species. Not only is the animal protected but so is their lodge. They are strict vegetarians specialising in eating trees. Their preferred trees are aspen, willow, birch, ash, alder and apple but they will fell any tree if their favourites are not abundant. Therefore, if your property is close to or runs down to the river, and you have trees you particularly value, installing trunk guards might be a good investment.