2022 was not the best year for surveying our bat box installations. The late summer weather became progressively more wet following the abnormally hot summer and dry days in which to undertake them became fewer and fewer as autumn arrived. This meant the work was protracted and difficult to achieve. The wet weather and windy days were so frequent that it became a case of seizing the first opportunity of a dry interlude, which was usually at very short notice due to the erratic weather patterns.

The bat survey this year was difficult due to the bad weather.

This obviously made the formation of the teams necessary to undertake each survey a last minute attempt and many surveys had to proceed with less than a desired compliment of team members to make any progress. These outings were obviously harder to complete with less volunteer support and took a great deal longer. Such was the difficulty, that our survey period of approximately a month to visit all our installations became stretched to a period spanning from the first one at the end of August, to the last one at the beginning of November. Some of these opportunities had to be undertaken in very low temperatures and often immediately following gale force winds, so advanced expectations of poor levels of occupancy were often realised.

Difficulty was experienced in recruiting sufficient volunteers at short notice when dry weather permitted.

Following our hugely successful year last year when we had Bechstein’s bats occupying several locations in addition to an increased number of other species, we feared the weather conditions would make the 2022 results significantly poorer. To a degree this was indeed the case, but we found a reasonably high occupancy including a retained Bechstein’s bat presence despite this.

Despite the poor weather we managed to retain a Bechstein’s bat presence again this year.

Due to the very high winds experienced, we found many woodlands contained a large number of fallen trees, often blocking the integral avenues utilised by bats for access into them.

We found many trees had fallen in the high autumn winds.

This meant in some instances we had to unblock some of the avenues as we proceeded to maintain the flight paths and roosting suitability required for a continuing bat presence. This again added to the difficulty.

 Access avenues had to be kept clear to maintain woodland flight paths.

In one woodland, we found that so much rain had fallen that areas we normally required to erect our ladders in were flooded to a depth of a metre of water. These boxes were obviously inaccessible to us this year.

Erection of ladders in flooded areas proved impossible.

We have also made an effort to replant removed trees where necessary to maintain the quality of the wood and its ongoing suitability for bats.

To restore woodland suitability for bat occupation some replacement trees were planted.

The working parties made progress despite reduced numbers of helpers.

These difficulties have made a year when we were struggling to catch up with a late start to the year’s commitments due to unavoidable problems, even more awkward to achieve. Again, the end of year wet weather was continuing to be an obstacle to us. We battled on however, hoping that the erratic seasonal weather conditions returned to a degree of normality to help us. This improvement unfortunately, did not materialise. Below we include a pictorial record of some of our survey ventures and some of the 2022 bat population monitoring activities and the results obtained for you to share with us.

The physical effort required was unchanged….

….to allow boxes to be accessed. 

The bad weather just made it harder and more prolonged with the limited number of dry days to select from.

We gained access to most boxes….

….despite the extremely wet ground as seen here.

The hot summer followed by a very wet autumn had encouraged bramble understorey growth to accelerate and make ladder transportation and positioning extremely difficult.

Most woodland terrain is also very uneven…. 

.…making safe positioning for ladder footings….

….extremely important when working at such high levels, especially when the ground is waterlogged.

The helpers on the ground below always ensure the ladder footings remain secure for the person operating at these extreme heights.

Despite our fears of poor survey results….

….our initial findings contradicted this.

The majority of bats found this year….

.…were Common Pipistrelles….

….found at varying stages of growth….

….and numbers.

Bats found in boxes have to be treated with care.

Many remain stationary….

….while others can crawl around while they are being recorded.

It is therefore necessary to keep track of all occupants….

….while identifying all individuals contained.

Groups can be particularly awkward….

….as an initially tight cluster can explode outwards….

When each survey has been completed, the whereabouts of every individual is important to prevent any being trapped in the door when it is closed.

We were very pleased to find Bechstein’s bats in our boxes for a second year running.

This makes us feel that all the effort expended in making conditions perfect for them, worthwhile.

The work is hard and only for the dedicated to undertake with the necessary expertise, but the year-on-year improvements in numbers we are achieving provides us with the encouragement that the effort is making a significant improvement to local populations.

The Woodland, Flora & Fauna Group has been busier than ever during the latter half of 2022. In June we visited the woodland pond in Sayers Common and spent many weeks maintaining the valuable wetland location. It was overgrown with ragwort, thistle and spreading brush again.

Volunteers worked hard to restore the area to the condition it was left in last year. The weather was at the latter end of the extremely hot period and the volunteers found the hard work required very taxing in these conditions. They persevered until the work was concluded so that they could quickly move on to other areas that demanded attention.

The volunteers found the area very overgrown.

It took a very long time to reach the pond with the huge amount of brush growth surrounding it.

 The volunteers persevered however…. 

.…clearing all debris created…. 

….until a conclusion was reached.

In September our group once again had a stall at the annual Hurst Festival Super Sunday Event to advertise our work and recruit additional volunteers to help us. The day was fortunately fine, and the event was well attended. Group volunteers worked in shifts to man the stall and explain our work to interested bystanders. It included a second table selling bric-a-brac provided run by a valued member from Sayers Common. Money made from this, and generous contributions received to help us in our work made the exercise a worthwhile one to support our nature conservation effort.

Group volunteers manned the stall for the Super Sunday Event.

Wildlife conservation boxes and activity photographs attracted attention from passers-by. 

Contributions received aided our ongoing nature conservation effort.

We then quickly moved on to the next site that was requiring our attention. This took us back again to Pond Lye Site of Nature Conservation Importance where due to a presence of breeding wildlife requiring nurturing until grown, we had delayed the annual meadow cut. The first task was to cut the meadow and again our volunteer helper with a tractor attacked the excessively tall growth that had resulted from the long, hot summer weather. When this was done, we quickly attended to rake up the cuttings while they were still fresh and easy to remove. We were fortunate enough to have help from a Sussex College who joined us for a day with over 50 students. This help was massively useful, and we are grateful to them for it.

Our tractor volunteer initially attended site to cut the meadow.

Many students visited for a day to assist us with raking up the hay.

Lines of helpers were formed to enable teamwork to assist in task achievement.

The hay was raked into progressive lines as volunteers advanced across the meadow.

The lines of raked hay were transported to form stacks.

The haystacks quickly became very large.

With many helpers we made rapid progress.

All participants readily embraced the multitude of required tasks….

….and the meadow was eventually cleared of the majority of the cut hay.

The students enjoyed helping us and we were grateful for their valuable effort, which achieved significant progress in what was normally a very protracted annual task. 

There was a section of meadow which the tractor was unable to cut due to the height of the flora making it impossible due to the uneven terrain that lurked beneath. This was therefore left to be cut by hand later, when the majority of the rest of the meadow had been cleared of cut hay. For this reason and the extensive and prolonged wet weather that immediately followed, this final section is still being worked on. Weather improvement permitting, we hope to finish in the near future.

The remainder of the area which is uncut is being tackled with brush cutters.

The cut hay continues to be raked and stacked for later disposal.

Barrows are filled and wheeled to selected sites for burning.

Progress from now on is being dictated by sufficient dry interludes occurring in a very wet autumnal season….

….but with luck should be completed shortly.

During this period a mature tree was unfortunately detected to be unsound at Talbot Field pocket nature site. Due to it being close to an adjoining roadway, it was felled by tree surgeons. We spoke to Hassocks Parish Council, the owners of the site, and they kindly agreed to purchase a replacement tree for us to plant in place of the felled one as we were anxious that the current equilibrium of the woodland for bat occupation, would be compromised. When the tree arrived some of our volunteers attended and immediately planted it together with a second tree donated to the parish council by a local group. Both are currently flourishing.

A hole was quickly dug to house the replacement tree.

 It was carefully planted and watered-in well.

It was well-supported and will hopefully grow to fill the space taken by the felled tree.

A second tree which was donated to Hassocks Parish Council by the local U3A Group in memory of one of their recently deceased members, was planted in the adjoining meadow as an addition to those already growing there.

Hopefully both trees will eventually mature to add to the unique nature value of the location. The site will be attended again in the near future to deal with some of the tree damage caused by recent severe winds and to collect up fallen branches to form wildlife habitat stacks.

Our barn owl conservation area established in 2007, has continued to grow each year to provide us with a significant benefit to the species in and around the southern Mid Sussex area. Started when the species was on the amber-listed species register under threat from habitat loss, the barn owl has, with our contribution to a national effort amongst similar groups across Great Britain, returned to a healthy population. It is, however, now dependent on artificial nest boxes supporting 85% of its population. This has placed a responsibility on our shoulders to maintain or increase our group effort to reflect and support this dependency.

These beautiful birds are worth all our effort to support their continuing survival.

Loss of natural hunting habitat through the continuous erosion of suitable countryside required to provide them with sufficient prey to sustain them, is the prime reason.

Their presence is often witnessed at dusk when they begin hunting for food across open countryside.

Human expansion taking increasingly large chunks of this terrain to provide housing and industrial development is mostly responsible. Developers are choosing to select green field applications to provide this human expansion rather than utilising existing brown field previously developed areas, as it is far easier to prepare, and less expensive to achieve than if they had to clean it up first.

The barn owl relies on large areas of our natural landscape to provide sufficient prey to sustain them.

Councils are increasingly allowing such development to happen as they are under considerable pressure from successive national governments to increase housing numbers and industrial units.

This is another local area of countryside that is in the process of disappearing forever in the village of Hassocks.

This results in the current trend of short-term thinking to maximise such results as speedily as possible, without considering the effect on the future of our natural environment and the demise of wildlife species struggling to avoid extinction.

If more intelligent long-term consideration was applied, they would see as we do, that we as a human race are equally dependent on the survival of countryside to provide us with the food and the same natural environmental qualities needed by wildlife to survive.

In an effort to offset this inevitable calamity to all, we as a group try to combat this damage as much as we possibly can with our conservation work.

We have provided barn owl boxes in and around southern Mid-Sussex to form a group conservation area.

Our barn owl conservation team therefore works ceaselessly throughout the year maintaining damaged boxes in the winter to ensure our barn owls have adequate shelter, inspecting boxes to establish breeding success in them in the summer, and recording the number that eventually fledge to boost the local population.

These boxes are subjected to harsh weather and physical damage and need constant upkeep to maintain in good condition.

It is very hard work for all concerned, as most nest box locations are great distances into the countryside and require a huge physical effort to travel to them over terrain unsuitable for vehicle access, to transport the ladders and equipment necessary to implement this.

The locations selected are in remote areas of countryside to meet the requirements of the barn owl.

To help us achieve this work we have extremely generous benefactors amongst our members, the public and other groups, who kindly support us with donations and contributions to help to financially assist us with the expensive task we undertake. We are very grateful to everyone that helps us in this way.

The team undertaking this work are dedicated and includes one member who spends hours of his life undertaking repairs and construction of boxes that are too badly damaged to be restored on site. His workshop and the engineering skills he possesses, transforms all boxes that aren’t beyond repair and requiring replacement, into rejuvenated homes for the owls. With the boxes considered to be beyond help, completely new ones are required.

Our team members devote a huge amount of their lives to this task.

We then revisit the sites the boxes were removed from and return them to their previous positions. His effort and expertise are invaluable with this conservation effort and we are extremely grateful to him for it. It also greatly reduces the continuously rising costs of materials we are faced with to achieve, especially with the cost of full replacement boxes escalating daily.

Hours are spent ensuring warm and dry roosting habitat for the owls is available to sustain them in all weathers.

This year’s results for owls breeding in our boxes was good overall, although the individual brood size was slightly smaller than other years due to the unusually hot spell experienced in early summer. This in turn affected the availability of prey for them to feed on. In times of food shortage, initially higher brood numbers can be reduced as they grow, as hungry larger chicks can consume their smaller siblings to compensate.

With our conservation area territory now extremely large due to having to offset the reductions caused by development, we managed to maintain their breeding levels to sustain their population.

The birds are classed as Schedule 1 species and their disturbance requires a permit for recording activities. Using this authorisation held to disturb the breeding occupants, we submit below some of the results we achieved with all pictures showing this year’s box residents. We encountered a huge difference in the stages of development at the first visit, with some still in egg form whilst others contained owls that were almost ready to fledge.

We found many boxes containing barn owl eggs on our initial visits.

We also found a number that contained kestrel eggs.

Barn owl egg incubation takes 30 to 31 days until they hatch. These are some of the near naked and blind chicks that we found had emerged in our boxes. Note the larder of dead prey collected by the parents in readiness for their development.

They initially form a thin coat of down called Neopile. They are very dependent on surrounding warm conditions to sustain them at this time.

These are owls we found showing the typical size difference often occurring between siblings, as the initial Neopile down is replaced by a thicker Mesoptile down after 12 to 14 days.

When the Mesoptile down is completely grown after 22 days they can control their own body temperature.

The distinctive barn owl facial discs begin to emerge after 12 to 13 days and the primary feather quills begin emerging with downy tufts. These pictured chicks became very familiar to us during our successive visits, as we diligently monitored their progress in an area of meadowland that our group maintains.

 Each visit we made recorded development and survival progress of all breeding occupants.  

The full feather quills begin emerging on the 25th day and body feathers rapidly form.

Our visits logged all changes to their development….

….as the instantly recognisable barn owl features began to emerge.

At 56 to 60 days the Mesoptile down is completely replaced by feathers and they are able to fly. 

At this stage they are completely indistinguishable from adults.

By the 56th day of development this stage is complete, although the feathers continuing growing until the 70th day. 

We were able to clearly see the sexes of the occupants at this time, with the female on the right exhibiting spots on the chest under the wings and a fawn collar under her facial disc.

The male on the left displayed completely white chest feathers.

At this stage they could readily fly from the box. This was one that flew out as we approached the tree the box was mounted on. Unfortunately, it was not able to sustain its flight and ‘belly-flopped’ into a surrounding field. It was gently recaptured and returned to the box to ensure its safety away from predators, as shown above.

This picture of the same owl naturally emerging from the box some time afterwards, which was forwarded by a friend of the very wildlife supportive landowner who was observing from a distance.

This picture forwarded by the same landowner, showed both the owls we had initially recorded in the box, emerging together in the twilight of the evening before they fully departed.

Our boxes are the roosting homes to many adult barn owls who capitalise on our effort to support them. This is one adult temporarily leaving the box to allow us to maintain it this year. It returned on our departure.

 With many of the sightings seen in our area of our countryside resulting from the presence of our barn owl conservation boxes, we feel a sense of achievement which sustains us through the periods of hard work and bad weather discomfort required to maintain them. 

The presence of kestrels in our boxes is increasing. These are those that resulted from the 5 kestrel eggs shown earlier.

4 resulted from the 5 eggs. There was no trace of the 5th egg.

They matured into very feisty fledglings on our return visits.

The demeanour of this one demonstrated the attitude ‘come one step closer and I will have your hand off!’ As they individually reached maturity, they progressively departed but were witnessed flying around the box position for some time afterwards.

Kestrels and barn owls readily are found occupying adjacent boxes and co-existing in the same countryside area, despite being rivals for the same prey. We are pleased that we are providing opportunities for both species and are hopefully making a difference to their survival prospects.

We undertake the conservation of a small but ecologically valuable area called Talbot Field in Hassocks. It includes a small wooded area surrounded by a field which has reverted to meadowland. This year we began our yearly work there in the early months by removing unwanted brush within the woodland and a smaller tree formation at the opposite end of the site, to allow unfettered public access to the footpaths that wind beneath the trees and restrict the bramble growth to a manageable presence. This allows woodland flowers to flourish in the spring.

The trees always produce a large quantity of debris each winter due to gales breaking off branches and occasionally causing a tree to fall, so our first task with the clearance work this year was to collect and cut up all the debris and stack it in piles under the trees to provide habitat for indigenous wildlife.

Stacking wood debris for wildlife.

Clearing the cuttings from the woodland.

 The site provides a home to many species of wildlife like this frog found residing beneath the leaves.

Toads are also found in the woodland area.

Cuttings were raked up and transported to a bonfire.

Once this was done, we began the brush cutting exercise with all resulting cuttings transported to a central position at the rear of the site, for disposal by burning. Due to the location of the surrounding houses, we only undertake this when the wind is blowing away from them to avoid any inconvenience to neighbours.

Volunteers wheeling barrows full of debris for burning.

Getting rid of the brush cuttings was the next step.

Some volunteers took a well-earned break before moving on to the next section.

When this was completed, we turned our attention to the meadow and removed all the bramble spread from under the trees, other brush emergence and a multitude of unwanted tree seedlings peppering the area. This keeps the meadow in the best condition for the summer wildflowers to flourish each year.

Clearing up after brush removal.

We then undertook the brush clearance adjacent to the perimeter hedgerows and fences to control its spread into the meadow and address the voiced concerns of the owners of neighbouring properties who resent it spreading into their gardens. It also allowed the perimeter bluebells and other wild flowers to grow freely without being smothered.

On completion of this phase, we undertook the removal of emerging ragwort plants whose presence always generates animated requests from neighbours for its removal as it spreads so freely and has reputation of deadliness to grazing animals. The plant tends to alarm people, in many cases unnecessarily where animals are not present. Certainly it is of value for Cinnabar Moths to flourish.  This year was a bumper year for ragwort due to favourable growing conditions and required a later return visit to remove the clearance of a second flush of growth. After this effort the meadow was left undisturbed for the meadow flowers to flourish.

Several years ago, Hassocks Parish Council, who we have always found to be an enthusiastic supporter of the natural environment, purchased some wildflowers for us to plant to enrich the meadow. Last year several packets of wildflower seeds were additionally sown by our group in the spoil heaps of the very vigorous mole population and have grown. A number of foxgloves and other wildflower plugs from our own group nursery garden were also planted last year and watered throughout the summer. The rewarding results of these efforts were seen this year with patches of ox-eye daisies, musk mallow, ribwort plantain, knapweed, vetches, cowslips and several other species providing colour amongst the meadow grass. The increased insect activity witnessed around these species clusters was evident.

Results of previous year’s planted plugs adding colour to the meadow.

Ox Eye Daisies have been added to the species mix within the meadow.

Musk Mallow now grows in many places to add richness to the area.

The only planting done this year was a small beech tree donated by a parish resident which has been watered weekly during the recent hot spell. This single planting was perhaps fortunate, as the dry heatwave conditions would have generated considerably more effort with the watering activity if more additions had been included.

The bird nest boxes mounted in the tree formations on the site have provided homes again to the local population of nuthatches, great tits and bluetits. These, together with the many area bat boxes, have been provided by the Parish Council for us to maintain and monitor over several years and for which we are very grateful to them.

The bat boxes have produced a regular colony for bats of various species to a remarkable degree for the size of the woodland area. Each year in the late summer we inspect them and record occupancy and always find that virtually every box has either resident bats in them or evidence from droppings that they are highly used. Last year quite a stir was created amongst bat groups and enthusiasts following our discovery of many ‘restricted and rare’ Bechstein’s bats in a number of the boxes.

Some of the Bechstein’s bats found in the boxes in Talbot Field woodland.

This led to us being requested to write an article describing the discovery for other groups. With the woodland being so continuously attractive to bats for colonisation, we strive to keep it in its current pristine condition to encourage continuation of this high box occupancy. We therefore are nervous when unavoidable external factors force change on the woodland structure and its existing formation, as with the unavoidable removal of several trees that were undermining a neighbouring property to the south last year and the large roadside oak tree detected to be unsafe to the north earlier this year which had to be felled.

Our late summer checks this year should indicate whether these losses have impacted usage by our local bat populations. We are hopeful that they haven’t and that a replacement for the tree to the north, indicated as a possibility by the Parish Council, materialises to restore the woodland.

The area is a valuable oasis for nature in a diminishing natural environment and we are extremely grateful to Hassocks Parish Council for the support they give us in our effort to increase its value still further.

Pond Lye SNCI

Having completed the work at Talbot Field for the summer we were then summoned to deal with an uncontrolled spread of ragwort at another of our sites called Pond Lye SNCI. Here the neighbouring property owners were again concerned by the sea of yellow which was advancing towards their property. We quickly attended and began clearing a 20 metre buffer strip away from their boundary by digging the plants out with ragwort forks.

The hot summer after earlier damp conditions encouraged vigorous meadow growth.

So vigorous was the growth here that in places it exceeded 2 metres tall, making it difficult for volunteers to see the person who was working next to them. With the summer temperatures so high and the ground so hard and cracked, it was almost impossible in places to insert the forks into the ground. In the high summer temperature, this task became one for the dedicated volunteer only.

In the extremely hot temperatures this summer produced, the volunteers battled on.

We found it easier to look back on the ground already cleared than the work which still had to be completed.

Slowly the sea of yellow shrank as volunteers progressed.

This ragwort invasion certainly pleased the insect populations in the meadow. Due to the exceptional growth of flora this year, the meadow became the home for wildlife of all descriptions.

Insect activity could be found everywhere.

Few plants were found without a wildlife companion, whether an insect on leaves and flowers or a small mammal scurrying beneath.

The grass in the meadow was unusually very tall this year also and baked dry and brown. This prevented any burning to take place as the surrounding terrain was like a ‘tinder box’, ready to spread fire uncontrollably across the site from the slightest spark.

All grass became parched in the heat of the exceptionally hot summer.

All ragwort removed was therefore transported to an area outside the meadow cut boundaries so that it could be left without impeding the annual late summer hay cut.

The volunteers worked tirelessly on this until a huge strip had been cleared bordering the neighbour’s area. It required three additional almost consecutive days to finish off so that group work could resume elsewhere. Our return will be for the meadow cut later when all all flowers have finished and the wildlife currently flourishing in the meadow will have dispersed.