Wildlife Surveys – Enviro-Mentalist

Mad dogs and wildlife surveyors

With temperatures soaring, you would have to be a fool to go out in the midday sun. Unless you had a wildlife survey to do. This weekend, like a fool, I went out twice. On Saturday I did my monthly BeeWalk (now in the fourth year), and on Sunday I went to survey a square for the Wider Countryside Butterfly Survey.

The Bee Walk can vary in difficulty, depending on the time of year. Early in the year there are only queens to worry about, as the season goes on there are workers, males and cuckoos thrown into the mix. I am not the most confident bee identifier, so I really should get some practice in before hand, especially when the lavender is in full flower and the bees are buzzing all over the place. Much easier to be confident identifying the different species in the field than to try and take photos, do diagrams and count at the same time.

I did take a little diversion on the way home to try and see my second favourite butterfly (Marbled White) and also to check that the Brown Argus are still where I expect them to be (although not for much longer as the site is going to be built on). Both were ticks – my first for the year for both species. Brown Argus are a bit tricky to ID, unless you are prepared – they look very much like a female Common Blue – except that they have two dots that are close together on the underside of their hindwing making it look like a figure of 8. The Blues don’t have this, but they do have an extra spot of the underside of the forewing. Fortunately the Argus does like to pose with its wings closed so you can be sure of the ID.

On Sunday I had a cunning plan – get out early to look for butterflies and get home before the heat really ramps up. Unfortunately the old adage of fail to plan, plan to fail, held true for me. I was picking up a route that had already been done by a previous surveyor a couple of years ago. But, I thought I knew where I was going and, armed with my print off of the map I set off in high spirits having just seen a Red Kite overhead. I took this as a good omen as it is my favourite bird of prey. In hindsight, maybe it was looking for the carrion from previous unprepared surveyors. The survey involves walking two roughly parallel 1km paths, and should take about one to two hours. (Although the last square I had was in the land where butterflies feared to fly and it took about 30 minutes because I only had to count 5 on the entire route). I was happily following the field margins along the path, counting large whites, small whites, meadow browns and gatekeepers. I even managed to spot my favourite butterfly, the small copper – which was an unexpected bonus – things were going well.

Then, I thought I had reached the end of the first 5 parts (of 10) of my walk. I emerged onto a road – and found I was back where I had parked my car – not halfway along my walk, but actually at the end. I had to start all over again! I hadn’t realised that the path I was supposed to take went through the middle of the field, but instead I had followed a path that wasn’t marked on my map! So I walked down the road, and tried to find out where I should have gone – sorted. I did the last three bits of that part and went to go and find the route back – and got lost again. Instead of going through a field, I was in a housing estate and found myself on a completely different road – it took me nearly 30 minutes to get back to where I should have been!

On the plus side I did see a nice dragonfly, survived the field with cows in it and still managed to find a Small Copper (actually two of them) on my proper route. But, instead of being out for about an hour or so, I spent two and a half hours in the sun – good job I had factor 25 and insect repellent on as well as a stout hat.

So, for anyone thinking of going out and surveying, please do but be more prepared than I was – visit the area first so you know the route, and make sure you have an idea about the species you are likely to see. I was told earlier this week that lots of people send in records of the rarer butterflies such as Purple Emperor and Wood Whites, but there are not many records of the generalists – people will just report lots of whites, or plenty of gatekeepers – which is not really very helpful to determine the state of the butterfly (delete and add in appropriate wildlife) population.

Some firsts for me.

In the last week I have been out and about a bit more getting some time in the great outdoors. This has been aided by some new insect repellant that seems to be working so far.

In the past week I have completed another bumble bee survey – better than last month but only half the number seen last year, spent a happy couple of hours just looking and photographing around Daventry, to be completed on Saturday with a WildSide recording sessions with the fab and enthusiastic Ryan Clark.

I’ve uploaded all of my sightings (or at least those that I can identify or have a semi-decent photo for) either onto iRecord or the local Biodiversity Records Centre, as well as entering my BeeWalk data so I am keeping last week’s resolution.

One of the joys of recording nature is that you are constantly discovering new things. During the BeeWalk this month we found a long-horned beetle that I’d not seen before, last month was my first Mother Shipton moth.

On Monday I was quite excited to discover that there were quite a lot of bee orchids flowering in Daventry (for once the mowers hadn’t done for them) and, quite unexpectedly I found a pyramidal orchid next to them. I am reliably informed that this might be the first record for this in the Daventry area.

Then, during the recording session at Mill Park Nature Reserve in Long Buckby, I found a small magpie moth. Completely new for me, and although quite common in the county, still something to get excited about I think.

And, the more you look, the more you learn and then the more closely you look. A virtuous naturing circle.

My next task is to start making a full list of the species I have seen and then keep it up to date!

New Resolutions

Despite my best intentions, for a nature lover and local organiser of a survey for Butterfly Conservation I am not very good when it comes to recording and submitting my own sightings – whether it is birds or bees, or anything in between. It’s not as if there is a shortage of ways to submit and record data.

When I do record my data I tend to use either the appropriate survey scheme site (i.e. the Butterfly Conservation site, BTO BirdTrack site, or the Bumblebee Conservation Trust BeeWalk site) or the iRecord site but there are many other recording schemes and apps out there that will automatically plot your position and give a more accurate location.

But, the very first recording I did was with the Woodland Trust’s Nature’s Calendar. This has been going for twenty years now and, with a database of 2.7 million records, has shown the effect of a changing climate on the various events that happen each year in the Natural World. Whether it is the first or last sighting of swifts, your first orange-tip butterfly or when blackberries ripen, there are a host of events to choose. I haven’t logged into Nature’s Calendar for many years, but having just read an article in the British Wildlife Magazine highlighting some recorders with over 2000 records clearly showing the shifts with changing temperatures I am shamed into digging out my password, logging on and making a list of the things I can easily record in expected chronological order – something to do on my day off tomorrow! Perhaps this will encourage me to keep better records – I can feel a new notebook coming on…

Bee Festival

Thanks to social media I discovered that Coventry University (their Centre for Agriculture, Water and Resilience) were running a two day bee festival just down the road at Ryton Gardens with the fantastic Steven Falk author of the THE bee ID book – and it was free.

I sat through three brilliant talks in the morning with three interesting and very enthusiastic presenters. First there was the aforementioned Mr Falk. How he crammed in so much information in less than an hour I don’t know. He spoke about his book, discovering new species including the use of DNA to prove an 18th century naturalist right and the different families of bee – I don’t think any of us there will forget the Pantaloon Bee! Next up was Andrew Salisbury from the RHS talking about the trials that they’d carried out at Wisley to find out if native, near-native (i.e. Northern Hemisphere) or exotic (Southern Hemisphere) plants were better for pollinators. The answer – depends on the pollinator. It was very interesting to see how they carried out the trial, such a lot of meticulous hard work. I was also interested to hear that they only saw 80 butterflies over the multi-year survey – I am not sure that butterflies visit gardens in great numbers unless you have a buddleia.

Finally we had Brigit Strawbridge talking about plants and pollination. She almost contained her enthusiasm for bees! Fact of the day that I learnt was that you won’t spot honey bees on lavender unless it is warm as it takes hot weather for the nectaries to fill up enough for the short tongued bees like honey bees to be able to feed. But brambles keep on providing nectar for days – that explains why the bees love my silver stemmed Rubus and shun the lavender for it!

In the afternoon Steven Falk entertained a large crowd on a search for bees around Ryton Organic Gardens – he was hoping for 20, but we were all satisfied with the 17 that we did see – including this Osmia leaiana showing its orange pollen collecting scopa on the underside.

Osmia leaiana-osmia leaiana

The whole festival was put on by BloomsForBees a new initiative promoting Citizen Science and plants for pollinators with a new App and website to help log the bees and the plants they are enjoying.

I had a fantastic day, made some new friends and renewed my love of bees. A recent workshop about solitary bees that suggested that there was no point trying to ID solitary bees unless you were willing to learn latin and kill the bees for subsequent dissection dampened my enthusiasm quite a lot. Steven Falk loves giving bees English names that make them more memorable and showed how much there was to discover without the aid of a killing jar and microscope. And, as for his knowledge of flowers… All I can say is if you get the chance to go on a Bee Walk or Workshop with Steven – grab it and his book which has been sitting unused on my shelf for too long.

New Year Plant Hunt

Flushed with the success of actually completing a nature survey last year (Bumble Bee Conservation’s Bee Walk) I decided to start the New Year off with more naturing and decided to look for flowering plants to submit to BSBI ‘s New Year Plant Hunt. I’d had a bit of a look round Daventry last week and saw quite a few plants in flower including daisies and clover so I was hopeful it wouldn’t be a complete dud.

I should mention, that I am at least as bad at recognising plants as I am bees, but I took my camera with me to get some shots so I stood a slight chance of finding out what they were at some point. Unfortunately, a lot of the shots were not very good, but I still managed an ID of all the plants. Final count was 15! Not bad for an hour of looking around housing estates in Daventry really. (I also found a couple of mushrooms as well that I am hoping I have ID’d).

These are two of the shots I’m not ashamed of, first Blackthorn flowering over two months earlier than I would have expected and then a plant I have seen quite often but never recognised; green alakanet. I had thought it was a member of the speedwell family, but it isn’t. I am not surprised to discover it is a member of the Borage family – I thought those leaves looked familiar!

The full list of flowers that I found is as follows:

Common Daisy
Common Dandelion
White Dead Nettle
Red Dead Nettle
Common Groundsel
Common Ragwort
Common Whitlow Grass
Common Field Speedwell
Green Alkanet
Creeping Buttercup
Common Mouse Ear
Common Bittercress
Shepherd’s Purse
Blackthorn
Smooth Sow Thistle.

The word common means that these should not be a surprise, but I have learned the names of 5 new flowers already and it is only the second of January!

Bumble Bee Walk No 3

I’m in to the third month of my bumble bee walks and I am becoming obsessed with watching the weather to see which is likely to be the optimum Saturday or Sunday to go out and look for bees.

This time it was a bit breezy, but the sun did put in an appearance and it was generally warm (that was a week ago and it has been quite chilly and wet this weekend so it was a good call).

My walk is divided into five sections, according to the type of habitat. I tried to choose some near houses, some near fields and hedges and some near disused land. Again though, there were not many bumbles about. In the first section there wasn’t a lot flowering other than hawthorn which I was surprised to notice was pretty much bereft of any insect life. I assume something must pollinate it or there would’t be any berries, but it wasn’t popular on this Saturday. I returned a score of null points for this bit.

I wasn’t very hopeful for the second section as it is along a path besides some new housing (which they are just finishing off). Fortunately I was in luck and spotted three different types of bumble bee. Next up was a long stretch with fields of crops on the left and houses on the right, mainly grass, but hedgerows, umbellifers and dandelions were scattered liberally. It was the dandelions that rescued me on this stretch, with a red-tailed and white tailed worker gathering pollen and nectar.

Off back into the houses and we found loads of mason bees, but also some bumbles, including a couple of queens feeding on lonicera. Fortunately this seems to be a favourite with both housing developers and bees, otherwise we would have drawn a blank again.

On the final stretch we have some disused land – it was a field and I’m sure they will build some houses on it, but for the time being it had some vetch, birds-foot trefoil and dandelions flowering on it. I counted three carder bees and a red-tailed on the birds-foot, but also my first cuckoo bee of the year on a dandelion – a queen red-tailed cuckoo bee Bombus rupestris. It was quite lethargic which allowed me to get a good look at it’s back legs – all hair, no shine or pollen baskets. Coupled with its very smoky wings and this was definitely a cuckoo bee.

So another disappointing bee walk. I’m starting to get concerned about the lack of bees (I’m not even seeing huge numbers in my garden). It can’t have been the weather this time as we spotted lots of butterflies – including orange tips and even a brimstone. At least by doing this regularly we will hopefully find out if it is indicative of a decline or just that there still aren’t many workers out yet.

The importance of urban green spaces

There has been a lot of debate about green belt land and building on brown field sites, but the importance of urban spaces is often overlooked. A recently published paper by M.H. Surohi e al looked at the populations of bees (solitary and eusocial, the latter being where a non-reproductive individuals care for the young of a single female as is the case with bumblebees) in an urban centre – in this case Northampton, the town where I work.

They surveyed several sites over the flight periods of the bees (March to October) within 500 metres of the geographical centre of the town (aka All Saints Church) and also some sites slightly further out that were local nature reserves or orchards. Their results were somewhat surprising (especially if you know how built up the middle of Northampton is) and found 48 species of bees within the town, representing 22% of the known species of bee (there are just over 250 in the UK) including one that is nationally rare. They also found that the urban sites were more diverse and abundant in bees than the meadows and nature reserves on the edge of town. The areas surveyed in the town consisted of roadside verges and roundabouts, gardens and churchyards.

Most of the bees were seen in the period from March to June, and the most dominant genus was that of the mining bees, Andrena which shows the importance of having non-tarmaced areas! Less surprising was the fact that hte most abundant species was Osmia Bicornis, the mason bee which nests in walls – it would find plenty of those in the middle of Northampton.

All this makes me even more determined to try and determine the insects sharing the hospital site in Northampton – I have already seen the ashy mining bee there along with its nomada parasite. Time to get my camera out…

Ashy mining bee, Andrena cineraria, not at the hospital

Three bees are better than two bees

I decided to do this month’s bee walk on Saturday even though it was a bit breezy and not very warm. I checked the weather forecast and saw cold and potentially rain for the next week or so and figured that the sunshine and a warmer week running up to Saturday might have been enough to tempt the bees out. Unfortunately I was wrong.

During the bee survey (which lasted over an hour) we saw a grand total of three bumblebees (one unidentified, one carder bee and one red-tailed). There was plenty out there for them to eat and we saw plenty of hoverflies and solitary bees, but virtually no bumbles. After we had finished the survey and were walking home we found another two bees, but still five was a bit unexpected.

However, I don’t think the colder weather was to blame, after all, bumbles are furry little creatures and can manage the cold better than a lot of other insects. I think this was a matter of timing. Early in the year bumble queens, the only bumbles to overwinter, emerge from their winter quarters looking for food and somewhere to nest for the year. Once they have enough nutrition they lay create a wax cup that they fill with nectar and create a pollen ball in which they lay their eggs. After a few days these hatch into larvae which then remain in the nest for a few weeks until they metamorphose into a bee. During this time the queen has to brood the eggs and larvae to keep them warm (hence the nectar) and she can only go out foraging for short periods of time. Hence, I think most of the queens were in their nests and the first lot of workers have probably not emerged yet so there is a paucity of bumblebees at the moment.

My first bumblebee walk

This year I signed up to do my first proper wildlife survey (one step up from the annual Big Garden Birdwatch or Big Butterfly Count, both of which I do most years). I have developed an interest in Bumblebees, I’m not sure why, I think it is through a combination of watching them through my macro lens and also because of all the information that is now out there due to the worry over the disappearance of pollinators.

The Bumblebee Conservation Trust launched it’s BeeWalk last year. It is asking volunteers to choose a 1-2km walk (as compared to a lot of surveys where the walks are in randomly allocated squares) and to walk it once a month between March and October, preferably in warm, dry and still conditions, and recording any bees spotted along the way.

I chose my route in an area where I knew I would have no trouble getting to once a month (in fact I tend to visit most parts of it every week) and then refined it to take in as many different habitats as I could. It starts in an industrial estate, heads past some fields, some new houses with some scrubby bits, more fields and more grasslands and houses. Not overly inspirational, but I am hopeful for some bumbles this summer.

What I wasn’t too hopeful about was my chances of seeing some bumbles this weekend. The weather has not been exactly warm, but with the forecast for today looking better than the rest of the week, and March rapidly vanishing into the realms of memory, I thought I’d better get my bum in gear and get out there looking for bees. This is actually a good time of year to start learning about bees because there are only the queens of true bumblebees generally about. There are no males, very few workers and none of those pesky cuckoo bees to confuse an amateur.

However, I was pleasantly surprised as there were actually some bees out. Due to a lack of flowers to be seen on the ground, I had to look up into the trees to find them, and it took a while to get my eye in. However, during the 1 hour walk I managed to spot 8 bees of three different species (and two butterflies, one hoverfly and a lacewing).

Most of the bees, with the exception of two queens which were quartering the ground under some hedgerows, were feeding on willow catkins (I have no idea if these were from goat willow, crack willow or grey willow as I didn’t even realise that there were as many different types until I looked online). When most people think of bees, they think of flowers, and if they think of trees at all they think of cherry blossom. However, at this time of year, the catkins of willow trees are an important source of nectar and pollen for bees and other insects. This became evident when we stood under one of the willows watching the honeybees in the tree. It sounded as though we were stood near to a hive. We spotted more than a dozen and they were so covered in willow pollen that they were glinting in the sunlight, looking as golden as the catkins themselves.

The next time I’m out and about I’ll definitely make a bee-line for the willows and see what’s buzzing.