Category Archives: Conservation

Ponies move to Lankham

Our four Dartmoor ponies have gone on their winter holiday to our Butterfly Reserve at Lankham Bottom, where the ground is less muddy and where there is more grass and a change of scenery!

Dartmoor ponies

Dartmoor ponies

This is the first time they have been moved since their arrival at Alners Gorse in November 2012, and despite our anxieties, the loading up and journey went very smoothly with a minimum of bickering between them.

The corral and gate system at Alners Gorse proved itself to be very workable. The four immediately made themselves at home, running the entire perimeter of the reserve then across the middle, obviously carrying out a quick assessment of their new quarters.

We are having to replace some of the fencing along the southern and western borders of the reserve as it is barely stock-proof and a team of nine branch volunteers spent a bright sunny day on February 16th clearing the gorse and bramble from the old fence and getting it ready for the contractor to start the job. A Peacock butterfly flew past, tempted out of its slumbers by the warmth of the day.

Fencing

Fenceline clearance

The new fence has been now been installed by local contractor David Wareham and completed in record time with the help of local BC volunteers and members of the EuCAN CIC Cerne Valley group (see http://www.eucan.org.uk )

Completed fence

Completed fence

We are very grateful to Wessex Water for agreeing to fund the new fencing.

The ponies are checked daily by our team of pony ‘lookers’ – if you would like to be involved, please contact Kathy Henderson on 01963 23559.

Weymouth Relief Road is a hit with butterflies

Georgie Laing has pulled together the information gathered in 2013 on how the sides of the Weymouth Relief Road, built in 2012 for the Olympics, are doing.

This area was deliberately not grassed, but seeded with butterfly-attracting wild flowers, which certainly seem to be doing their job.

A riot of colour now greets travelers when the yellow blanket of kidney vetch blooms on the cuttings and bridleway on the ridgeway. This is important as the caterpillar food plant of the Small Blue.

Kidney vetch on bridleway

Kidney vetch on the Bridleway, 2013. Photo: John Elliott

For the last two years Butterfly conservation volunteers have been monitoring the site to record the species of butterflies.

2013 proved to be a good year:

  • 25 visits were made
  • 20 species recorded
  • 621 individual records
  • 8 new species were recorded:
    • Large Skipper
    • Clouded Yellow
    • Brimstone
    • Green-veined White
    • Orange-tip
    • Adonis Blue
    • Peacock

3 species showed large increases from last year

  • Small White (144 recorded)
  • Common Blue (213 recorded)
  • Small Tortoiseshell (79 recorded)
Small Blue

Small Blue. Photo: John Elliott

Species list for 2013

  • Large Skipper (new 2013)
  • Clouded yellow (new 2013)
  • Brimstone (new 2013)
  • Large White
  • Small White
  • Green-veined White (new 2013)
  • Orange-tip (new 2013)
  • Small Copper (new 2013)
  • Small Blue
  • Brown Argus
  • Common Blue
  • Adonis Blue (new 2013)
  • Red Admiral
  • Painted lady
  • Small Tortoiseshell
  • Peacock (new 2013)
  • Wall
  • Marbled White
  • Gatekeeper
  • Meadow Brown
  • Ringlet (2012 only)

We would like to continue the monitoring in 2014 and are hoping to design a formal butterfly monitoring (transect) walk. More volunteers are needed.

If you would like to help or would like a more detailed report of the records please contact Georgie Laing  via our Contact Form.

Work on Lankham Bottom Butterfly Reserve

A team of 10 BC volunteers spent a beautiful still autumn day on Sunday November 17th at Lankham Bottom Reserve continuing the clearance work on the gorse and bramble scrub at the top of the south-facing slope.

Conservation work and bonfire

Lankham Bottom Conservation Work November 2013. Photo: Ann Evans

The bushes have been extending inexorably over the downland for over 40 years (according to local sources) but with all the efforts of volunteers and contractors in recent seasons, the large blocks of scrub are being broken up.

This will provide not only a greater area of valuable habitat for butterflies, moths and other wildlife that favour open grassland, but also more agricultural land for our tenant’s cattle to graze.

The next scheduled event at Lankham Bottom is on Sunday January 19. See the Events page for more information.

News from our Butterfly Reserves

Nigel Spring, our Reserves Manager, keeps us up to date with how recent events went.

Lankham Bottom May 12th : low temperatures made sure no butterflies were flying, but large numbers of Glow-worm larvae and some adult females were seen on the south-facing slopes.

Alners Gorse May 16th : Nightingales, Brimstones and Orange-Tips were the stars of the day when the North Dorset Community Resource Team visited Alners Gorse. Not to forget our four Dartmoor ponies of course! This tour of the reserve and BBQ were part of the Butterfly Conservation Dorset branch Educational Access programme which benefits local schools and therapeutic groups.

Photos of a glowworm larva on a hand and of a number of people working in a woodland setting

Left: glow-worm larva. Right: North Dorset Community Resource Team Photos: Left – Daniel Greenwood. Right -Nigel Spring.

First rung on the housing ladder

Alner’s Gorse – one of our four Dorset Butterfly Reserves – has supplied the wood for a project in Somerset. This project was nearly a year in the making, but recently came to fruition when nearly 30 bird, bat and dormouse boxes were erected at Hardington Moor NNR in Somerset this February. The project brought together volunteers and staff of Butterfly conservation, West Coker Scouts and Natural England.

Group of people posed with a pile of nest boxes

The wood for the boxes was sourced from Alners Gorse, which is part of the newly assigned Blackmoor Vale Commons and Moors SSSI. With the help of many volunteers, part of a conifer plantation was felled to create woodland rides and improve the habitat for the abundance of butterflies and moths found on this site. A Wood-Mizer mobile sawmill was used to turn this timber into a variety of planks and beams.

Natural England Reserve Manager Monique Hustinx collected a load of these planks and made them available to the West Coker Scout Group, who had in the past expressed an interest in Hardington Moor NNR when they helped with the clearing up and burning of brash after a hedge was newly laid. With the help of leaders and parents around 40 Scouts and Cubs spent several evenings building boxes for birds, bats and dormice, using templates provided by Monique. To give them a personal touch many were decorated and signed by their creators.

In early February a hardy group of scouts, parents and scout-leaders joined Monique and voluntary warden Mike Bickerton to brave the freezing weather and mount the boxes in several of the mature hedges surrounding the reserve. Hopefully it will encourage many of them to return to the reserve in spring and summer, to see if new residents have moved in, whilst taking in the abundance of wildflowers and the enchanting Somerset landscape of this NNR.

Urgent Help wildlife by signing an on-line letter to your MEP

The European Parliament will be voting on reform of the Common Agricultural Policy (CAP) on 13th March. The current proposals will support unhealthy and environmentally damaging practices, but your MEP will be voting on this, so please sign the on-line letter and tell them you want a policy that is good for wildlife.

Conservation Action on the Cerne Downs Ecology Project

On a day of chilly sunshine in mid February, huge progress was made with the continuation of the Cerne Downs ecology project. This large landscape area of ancient chalk downland is home to a recorded 35 species of butterfly including the Duke of Burgundy.

Three photos of men working or posed round a bonfire

Left: Keith Howland, Bernard Franklin, Adrian Neil Malcolm Wemyss Centre: Richard Belding Right: Colin Blyth, Keith Howland, Bernard Franklin, Adrian Neil

The photographs show the lower slopes cleared of persistently invasive ash, blackthorn and sycamore by a group of enthusiastic BC volunteers. It is hoped that in succeeding years, with restored daylight, the escarpment will revert to a wildflower rich habitat for the benefit of Adonis Blue and Marsh Fritillary butterflies. These activities are arranged in cooperation and agreement with the land owner Minterne Estates.

Men cutting down scrub and carrying wood

Left: Keith Howland. Centre: Adrian Neil. Right: Bernard Franklin

Good progress at Alner’s Gorse

Sun, soup, and smiles celebrated a superb turnout for the Alners Gorse workparty on February 17th February.

18 volunteers and two dogs turned out in the sunshine to open up a new glade through the north west corner of the block of scrub favoured by the Nightingales and Brown Hairstreak butterflies. Conifers, old blackthorn and some planted oaks were felled to link the track along the edge of the wood with another sunny clearing, helping to create the mosaic of bushes, trees and grassland which we hope to maintain on this reserve. Two of the participants brought cakes for tea and another contributed a delicious soup which was heated up on the fire to accompany the baked potatoes for lunch. The next date for Alners Gorse is Thursday March 7th.

Brown Hairsteak egg search

The beautiful little Brown Hairstreak butterfly is a threatened species that is very elusive as an adult – though many visitors to our Alners Gorse Butterfly Reserve have been delighted with close views of it, and manage some amazing photos.

Side view of a Brown Hairstreak

Brown Hairstreak. Photo: Mark Pike

Rather than counting the adults when they are on the wing in summer, a more reliable method of assessing the population is to count the white eggs in winter  – not an easy job, as the eggs are spread very thinly around the reserve, but not so difficult once you know where they most tend to be found: on the young blackthorn suckers along the edges of blocks of scrub and southfacing hedges at a height of about one metre.

A group of ten volunteers from the the Dorset Branch of Butterfly Conservation met at Alners Gorse for the annual Brown Hairstreak egg count on a chilly morning in December, then crossed over to Rooksmoor to undertake the 2012 survey.

Group of people wrapped up in winter clothes standing in a field

Alners Gorse volunteers. Photo: Martin Warren

The results confirmed our suspicions that the populations of Brown Hairstreak have suffered from several poor seasons, Rooksmoor more so than Alners. At Alner’s Gorse we could only find 27 eggs, while Rooksmoor Common turned up just a further 22 eggs. The Brown Hairstreak is one of the target species for our conservation management at Alners Gorse, so we are doing our best to look after it. Routine winter flailing of blackthorn hedges in the Blackmore Vale is one of the main threats to the butterfly, as the eggs get destroyed when the hedges are cut – but they are safe at Alners or Rooksmoor as this method of hedge trimming is not used. The best time to see Brown Hairstreaks on the wing is between mid July and the end of August, but in the meantime keep your eyes open for their eggs and let us know if you think you have found any.

Great day of conservation work at Lankham Bottom

Nigel Spring writes:

“On a beautiful sunny winter’s day, 13 people took part in the January work party at Lankham Bottom: Butterfly Consevation’s Reserve above Cattistock, continuing the programme of scrub clearance and management. Three chainsaws, two brushcutters, a lot of energy and a huge bonfire combined to eliminate a sizeable block of thorn, gorse and bramble on the southern slope, which we hope will over the years revert to herb-rich chalk grassland.

Some people clearing scrub on a hillside

Lankham Bottom work party. Photo: Maurice Budden

Lankham Bottom work party. Photo: Maurice Budden

The group exposed a nest on the ground containing a hibernating dormouse – a delightful but very vulnerable little bundle and possibly a new record for the reserve. It was carefully translocated to another nearby block of scrub and left asleep in a bundle of moss inside one of our cosy workgloves! The team of 13 volunteers ranged in age from early 20’s to over 70 and were sustained by baked potatoes, cake and hot drinks.

Our next scheduled meeting at Lankham reserve will be on Sunday March 3rd – why not come and join the fun?”