30 Days Wild – Day 9

The moth trap this morning did not have a lot of moths, although there was the first large yellow underwing of the year, this is one of the commonest moths in the trap throughout late summer and the autumn.

As well as a couple of common chafer beetles there was also a great diving beetle in the trap.

Diving beetles can fly between ponds and do so a lot as anyone who has made a garden pond will know, they can attract beetles with in hours. Fish are not so mobile, although they are often said to get moved as eggs attached to the legs of ducks there is rather little evidence for this. Overwhelmingly they are moved by people or move between sites during flood events. Two common species in the lakes on the reserve are rudd and perch, both in the picture below.

two rudd and a perch

Fish are prey for some birds such as kingfisher and heron, but also predators, taking smaller fish and lots of insects. So the larval stages of dragonflies, although voracious predators themselves have to be skilled at avoiding fish throughout their nymphal stage. So it is perhaps a surprise that so many dragon and damselflies survive to adulthood. Today I added another species to this years list when I saw my first scarce chaser of the year.

scarce chaser

Scarce chaser used to be a rare species of larger rivers, but in recent years it has spread and now exploits standing waters as well, just like the commoner broad-bodied chaser, although that specie soften uses small ponds too.

broad-bodied chaser

I had been wondering where out bee orchids had got to, with lots of pictures of them flowering elsewhere I wondered if we had lost ours, but no, they were just a bit later coming into flower.

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30 Days Wild – Day 14 – Garden Safari

I spent almost all of the day in the garden, working in bursts until I got too hot, then just sitting back and watching. There was a lot to see, twice groups of crossbill flew over, these birds breed very early in the year and then the families set out to look for ripening cones from which to prize the seeds. In some years, when the breeding season has been good but the cone crop is poor, birds will fly very long distances, hundreds or even thousands of miles. These are known as irruptions and are characteristic of species that exploit locally abundant, but unreliable food sources.

The main interest was the insects though, the pond continues to draw in dragonflies and this fine male broad-bodied chaser spent most of the day nearby.

broad-bodied chaser (male)

Whilst looking in the flower border at something else this recently emerged emperor dragonfly was spotted, not by me, although I was looking at something about 15cm away!

Emperor

As it was so close I got a few closer shots of the head and eyes. They have almost all-round vision with thousands of tiny facets to the eyes, which also have different coloured zones.

emperor head

It was not just dragonflies though, there were meadow browns in the mini-meadow and a red admiral on privet flowers, a small white attempting to lay eggs on the cabbages was less welcome though. The wild carrot is now coming into bloom and attracts quite a few species, including a second garden record of the mottled bee-fly, first seen a few days ago.

mottled bee-fly

Beetle included a Welsh chafer on a pink bistort flowerhead.

Welsh chafer

Lots of bees mostly evaded my camera, but I did get this male leaf-cutter bee resting on the side of the bee hotel, I confess I totally failed to identify this and had to be put onto the right course, I still find bees difficult!

leaf-cutter bee (male)

However prize of the day goes to an especially brilliant bug. I was working near the house when I was called to see “A red and black shieldbug” an exciting prospect as there is a recently colonising species spreading at present. However I was in the middle of  a task so had to wait a couple of minutes before going over, luckily the bug was still there and it was an ornate shieldbug.

ornate shieldbug

A species which is slowly colonising the south coast, something to look out for on plants of the cabbage family, this one was on rocket in our salad patch. Unlike some other species people ask us to look out for this one is pretty much unmistakable and really stands out, although it does come in various colour forms, so they don’t all look like this one.

 

 

Out in the Garden

Like most people who are lucky enough to have one, I have been spending a lot of time in the garden recently. Our garden is almost exactly the average size of a UK garden, so a little larger than most people will have, but still not a large plot. It does allow space for all the elements with a flower border, vegetable plot, lawn and most importantly a pond and mini-meadow. The aim has always been to maximise the opportunities for wildlife within a more or less conventional garden space and I am really pleased that it was as there has enough wildlife to keep me interested throughout lockdown.

Although the garden is very short of trees and shrubs the variety and features such as the meadow seem very attractive to lots of birds, probably just because it offers home to a large number and wide variety of invertebrates, the main food of nestlings.

Blackbird female

As we have been sitting out a lot it is really noticeable how much more tame most of the birds have become, a feature not just of birds that use the feeder, they just seem to have got used to us being out there.

I took the chance to refurbish our pond, which had evidently sprung a leak, so it was relined and filled from the water butts. In no time it attracted eight smooth newt and several damselflies and even egg-laying broad-bodied chaser with an attendant male.

broad-bodied chaser male

The mini-meadow, which with the area of the pond is in a 5m x 4m space is the main attraction for most wildlife. It was made by initially allowing the existing grass to grow and cutting and removing the vegetation once a year. I then added some seed and a few small plants that I grew from seed and over the last five years it has developed.

common vetch – just one of the species that was already present 

A flowery meadow is, unsurprisingly very popular with butterflies, over the last few days I have seen my first small copper and common blue of the year in my garden, both species I think breed in the meadow.

My first common blue of 2020

Small copper pair

Lots of other insects live in the meadow, most obviously lots of ants, I now have a number of anthills dotted about the patch, you may have spotted a couple of ants in the common vetch picture above, probably collecting nectar from the base of the flowers. A range of true bugs are wandering about, mostly, but not all, vegetarians.

Rhopalus subrufus – one of the many true bugs

There has been a lot in the media in recent times about bees and pollinators. You could be forgiven for thinking that pollination is dependent upon honey-bees, occasionally in very industrial scale agriculture this is almost true, but generally this is far from the case. In fact it turns out that more diverse environments have more pollinators and more different types of pollinators, we have a pollinator “problem” because we have impoverished our environment. I notice in my garden that having lots of different plants with differing flower types results in seeing lots of different types of insects and especially different species of bees.

ashy-mining bee

The ashy mining bee is one very distinctive species of spring-flying solitary mining bee which is increasingly visiting gardens. Pollination is carried out by almost all insects that visit flowers and even by other creatures like birds and small mammals. Recently the importance of moths has received some attention, as they fly at night their role is often forgotten. Hoverflies are more obvious and it is easy to see them visiting lots of flowers, often with a coating of pollen grains. I was interested to see a species I did not recognise recently int he garden and luckily got a picture that was good enough to identify the species. It turned out to be a recent colonist to this country with larvae that eat house-leeks, it may have got here under its own steam, but more likely was brought here as a result of the plant trade. It was first found in 2006 and now quite widespread across the southern part of the country.

Cheilosia caerulescens – the house leek hoverfly

 

A Couple of Days in the Garden

I made the most of the weekend sunshine and spent some time in my garden, now with a refurbished pond. Refurbished in that it now actually holds water, it had been reduced to an ephemeral pond at best, an interesting habitat, but perhaps not the most appealing in a garden. On Sunday I decided to use the last of the rainwater stored in the water butt to top up the pond, trusting in the forecast rain to replenish the store. I was almost instantly rewarded with the appearance of a female broad-bodied chaser dragonfly, perching near the pond and then dipping her abdomen into the water as she laid some eggs.

broad-bodied chaser (female)

A little later there were two, chasing each other around between bouts of egg-laying and resting up in the sun. I also saw large red damselfly and common blue damselfly in the garden, making three Odonata in the garden before the end of April.

It was a weekend for egg-laying insects I watched, but failed to photograph successfully, an orange-tip laying on the garlic mustard and a holly blue laying on alder buckthorn.

holly blue female

I had not known that holly blue would lay on alder buckthorn, although I did know they used a good deal more species than just the traditional holly and ivy. Laying on my rather small alder buckthorn also puts the caterpillars in direct competition with the brimstone caterpillars when they hatch in a few days after being laid last week.

brimstone egg-laying

The early rush of butterflies was dominated by brimstone and peacock especially, with fewer comma and small tortoiseshell. Perhaps because of the very good weather these species seem to have declined rapidly an dare now being replaced by the whites  and the first of the arriving red admiral. Small white and green-veined white are residents and typically pick up in numbers during April.

green-veined white (male)

Large white are resident in rather small numbers but bolstered by, sometimes very large, arrivals of migrants.

large white (female)

There is a bit of a race on at the moment to see who can add the next new butterfly species to the UK list. One thing is pretty certain it is going to happen and probably not very long away, in fact it may well already be here. The species is the southern small white, it has expanded from southern Europe over recent years all the way to the channel coast, under 30 miles away. The difficulty is that it is quiet similar to our regular small white, so if you want to make a name for yourself look up the differences, keep your camera handy in the garden and plant candytuft. Why candytuft? Because it is the preferred caterpillar foodplant of the southern small white. It could be you, especially if you live on the south coast, the Isle of Wight has to be a likely location, if someone in Kent does not get in first!

I will end on a picture of the most dramatic plant in my garden, the giant viper’s bugloss Echium pininana which as it starts to flower becomes a tower of bees as the flowers shoot 3 to 4m or more into the air.

giant viper’s bugloss

I have, of course been recording the species I have seen in the garden and uploading the data to the many citizen science recording schemes, something we can all do for everything from butterflies to earthworms.

 

30 Days Wild – Day 2 – Hawks and Dragons

Once again a day off at home trying to work in the garden, but the sun was a bit much so productivity was rather low!

However the day started with a look through the moth trap, most of the moths would have been attracted before midnight when it was warmer, but as the minimum was 14 degrees some will have been active throughout. The pick of the catch were a couple of hawk-moths.

lime hawk-moth

Lime hawk caterpillars eat the leaves of lime trees, but also birch. Many hawk-moths are named after the larval foodplant, or at least one of them. The privet hawk-moth caterpillars eat privet, but also lilac and ash, it is our largest resident hawk-moth.

privet hawk-moth

Other moths caught were buff-tip, heart and dart, treble lines, flame shoulder, light brocade and fox moth.

The sun brought a few butterflies out, I saw a male common blue and a female brimstone in the garden during the early afternoon.

female brimstone nectaring on storksbill

The sun also encouraged a fair few hoverflies to feed on flowers in the borders.

Dronefly Eristalis horticola on fox and cubs

Eventually I gave up on the garden and went out for a walk in the New Forest, luckily I live close enough not to need to drive there. The recent wet weather has filled a lot of the small ponds and each one seemed to have a broad-bodied chaser or two.

broad-bodied chaser male

There were also good numbers of emperor and four-spotted chaser too.

The New Forest is one of the largest areas of semi-natural open space in Southern England, although a “Forest” it has a lot of wide open treeless areas. This is because a forest in this context is a place where deer were hunted rather than, as we tend to think today, a place dominated by trees. To pick up on the theme of Jo’s post of the other day and also highlight a particular problem within the Forest, I did see a couple of invasive alien species on my short walk. Both were attractive escapes from cultivation and wetland species.

Iris laevigata growing in a New Forest mire

In the background of this shot is another invasive, the white water-lily.

white water-lily

Finally………..

What’s in My Meadow Today?

Although it is perhaps not really a meadow plant I do have a few wild carrot plants in the meadow, like all umbellifers they are very attractive to insects, so I allow them in. The flowers are only just opening and actually look rather interesting just before the flowers open with the head enclosed caged.

wild carrot flower head just about to open.

Two days gone, just another 28 to go!

The Blues

The last few days have seen warm sunshine by day but chilly nights, meaning it has been poor for moths but good for day-flying insects. Today at Blashford Lakes I saw my first scarce chaser and downy emerald of the year and there were other dragonflies about too with reports of emperor, broad-bodied chaser and hairy dragonfly.

Most of the butterflies that over winter by hibernation as adults are getting scarce now and spring species such as orange-tip are dropping in numbers. there are a few whites around with all three of the common species, but the highlight today was the emergence of  blues. The small meadow near Ivy North hide had six or more male common blue as I went to lock up and at least three brown argus as well, the argus is brown, but an honorary “blue” all the same..

common blue (male), freshly emerged.

The brown argus look very like small female common blue, and the male common blues will get up to chase one if it flies by, however they quickly realise their mistake and give up. The first emergences are all males and the females will follow in a day or so. The reason for this is the same as that for male migrant bird arriving just ahead of the females. Evolution will push the males to be in place and ready for the first females to arrive, it does not pay to be late, so the pressure for males to be early is greater than that on females, who can afford to wait until they know there will be males to mate with.

The spring solitary bees are starting to disappear now, many species collect pollen from just a few plants and as these cease to flower they need to wrap up their breeding cycle. I did come across one interesting species today though, it was one of the nomad bees and the smallest species of them to be found in Britain, Nomada sheppardana.

Nomada sheppardana on forget-me-not

Visiting flowers is something many insects have to do to feed, it may sound an unproblematic things to do, the flowers want to offer a nectar reward, or perhaps bribe might be a better description, to the insects that will pollinate them. However it is not as safe as it might sound, flowers can hide predators, especially the camouflaged crab spider which match their colour to the flowers they sit on.

crab spider with hoverfly prey

The crab spider here matched the hawthorn flowers so well that I missed it and initially set up to take a picture of the hoverfly, only then did I see the spider!

It has not been a good year for ground-nesting birds so far this spring, with most lapwing and little ringed plover losing their eggs to predators. I suspect mammals at night as the ones nesting on the islands are doing much better. Or at least they were, on Thursday might all the black-headed gull on Long Spit abandoned their nests. Although I don’t know for sure I suspect that something swam out there and ate their eggs, probably a fox or a badger. These mammals are usually not that keen on swimming, but if they are hungry they will go to great lengths to get the food they want, I think small mammals, which are their preferred prey, are in short supply this year, which might be why they are seeking birds eggs more actively.

Despite a bad time for some ground-nesters the pair of oystercatcher are still doing well, with their two chicks growing well. They hatched on Long Spit, moved off to the shore near Tern hide and have now returned to Long Spit, this meant they were not out there on the night of the predator raid. So far the main gull colony on Gull Island shows no sign of being attacked and neither do the tern rafts on Ivy Lake.

 

Insects on the Up?

The progress of the season has been rather erratic this year, with spells of very warm or even hot weather interspersed with much colder days. Overall I think that we are still a little behind the average of recent years, but it is a very mixed picture.

Sunday was a fine, warm, sunny day with little wind, ideal for insects and I saw my first beautiful demoiselle, broad-bodied chaser, four-spotted chaser and emperor dragonfly of the year. The four-spotted chaser had emerged from the Centre pond, I think th efirst time I have proved that they have done so there, although I have seen individuals there a number of times. Numbers of large red, common blue, azure and blue-tailed damselfly are also continuing to build.

I am trying to look more closely at the bees on the reserve this year, Blashford has a lot of dry ground with sandy slopes, ideal for solitary bees. In fact “brownfield sites” such as Blashford are particularly good for bees as they often have variations in soil type, slopes and banks ideal for nesting.

Andrena bicolor

Gwynne’s mining bee, Andrena bicolor is one of our commonest spring mining bees and also has a summer brood, it is a close relative of the much rarer grey -backed mining bee, Andrena vaga which was found on the reserve for the first time a couple of weeks ago. The rarer species is still around, but not in the same numbers as a fortnight ago, some of them are getting worn now and so look rather like the much commoner ashy mining bee Andrena cineraria.

ashy mining bee Andrena cineraria excavating a nest tunnel.

For several years now there has been increasing evidence of an overall decline in total insect abundance, it is very hard to prove absolutely but accounts of declining moth trap catches and a general scarcity of many insects is attested by many. Older people will remember that when travelling any distance by car in the summer it was necessary to clean many squashed insects off the windscreen. Of course more aerodynamic cars may be a factor too. Whatever the reason it has become much harder to find many insect species in the average summer these days. It was pleasing to see a fair few hoverflies out yesterday including a number of Cheilosia species, a rather difficult genus of mainly black species, the identification of the images below maybe open to revision!

Cheilosia bergenstammi (male)

Cheilosia impressa (female)

Despite the warmer days the nights are still quiet cool and so the moth trap has remained quiet. The pick of the catch was a chocolate-tip moth, it is evidently quiet a good year for therm as this was the third we have caught recently.

chocolate-tip

The only grasshoppers and crickets about at present are a few tiny nymphs, but this is the time for finding adult groundhoppers, although the only one I saw was a common groundhopper, but at least it posed for a picture.

common groundhopper

It would be good to think that we are turning a corner in the insect decline, unfortunately I doubt it, I suspect the wider environment is continuing to become less insect friendly. Although some of this is down to the use of very effective insecticides and industrial mono-culture farming, it is also our overall failure to leave any space for them, even where it would be easy to do so.

30 Days Wild – Day 18: Hotting-up

Sunday and it certainly was a day of sun and one to try and stay out of it too. We were due to visit Wisley Gardens but before we went I had a look around our garden and found a male broad-bodied chaser perched on a dead stem in the border.

male broad-bodied chaser

We went from our modest suburban plot to the manicured expanse of the RHS gardens. As we have a perennial border I am always interested to see what the borders in these large gardens are growing. I am a fan of very big plants so am always on the look out for new ones, especially Umbellifers, which are usually good for insects. I was especially impressed by one huge one, when I checked the label I realised it was a plant I have growing as a seedling in a pot and here it was with towering 4m high flowering stems.

It was so hot that it was quite difficult to stay out in the more open areas, it was not only the people that were feeling the heat and in a shady grassland I came across a white-legged damselfly perched up out of the sun.

white-legged damselfly

30 Days Wild – Day 11: Various Insects

Still a windy day but none the less quite warm in the sun, so if you could find some shelter it was very pleasant. The kind of day to go looking for insects making the most of exactly such places. In the garden the moth trap had one new species for the year, a varied coronet.

varied coronet

This moth was known only as a scarce migrant until about 70 years ago when it started to breed in Kent, since when it has spread widely, although I don’t often catch it myself.

I found a number of insects around the garden warming themselves including a number of hoverflies.

Merodon equestris

This one looks like a bumblebee in an effort to be left alone by birds, it is also known as the greater bulb-fly as the larvae feed on bulbs, it is not a favourite with many gardeners.

By the pond I found an unfortunate broad-bodies chaser that had emerged but failed to get its wings properly expanded, it will never fly, after a year of development in the pond it had failed at the last hurdle.

unfortunate dragonfly

In the afternoon I ventured out into the New Forest for a short walk. Again it was the sheltered clearings that harboured the most wildlife and in one patch of sunlight I spotted a humming-bird hawk-moth, luckily it landed allowing me to get a picture.

humming-bird hawk-moth

There were also hoverflies, although not so many as in the garden. On one sunny logs I found a specimen of Xylota abiens.

Xylota abiens

These hoverflies almost never visit flowers, but are often seen sunning themselves or moving over leaves, they may find the food they need from honeydew on leaves rather than nectar from flowers. This individual ahs picked up a hitch-hiker in the form of a tiny red mite which you can just make on the top of the thorax.

I also found one dragonfly, this time a recently emerged keeled skimmer.

keeled skimmer close-up

This close-up shows how the front legs are not used for standing, but held up behind the head ready to be used for manipulating prey to allow feeding in flight.

30 Days Wild – Day 7: Top Tips

Up and out early, relatively early anyway, to do a bird survey at our Linwood reserve this morning. Many species now have fledged young so the trees were full of birds, the highlight was probably a redstart at a probable nest site on the reserve edge.

Then on to Blashford where I was pleased to see the three small lapwing chicks and at least one of the larger ones still surviving along with both oystercatcher youngsters, all from Tern hide. I had to remove a fallen branch from the roof of Ivy North hide, luckily it had not damaged the roof itself, I hope the winds have now abated and we won’t have any more down for a while.

I then went to do some nettle control on the shore of Ibsley Water, we are making great progress removing the large nettle beds and establishing a grassland sward with a good scatter of ox-eye daisy and other flowers. I did have to check first so as to avoid the patches with peacock and small tortoiseshell larvae. The western shore is usually well sheltered from the prevailing winds and so it was today. I saw a fair few meadow brown butterflies and a lot of damselflies and dragonflies including banded demoiselle and three species of chasers, four-spotted, broad-bodied and scarce, all making the most of the windbreak provided by the roadside trees. Scarce chaser used to be very rare but seems to have benefited from climate change and is now more widely seen, it has also   moved from breeding only in rivers and now uses lakes and gravel pits as well.

scarce chaser

Both the females and recently emerged males look like the one above, but the males develop blue abdomens with age.

At lunchtime I tried out a lure for clearwing moths outside the Centre whilst I ate my lunch. These moths are rarely seen as they do not come to light and are very fast flying. The lures are artificial chemicals that mimic the pheromones produced by female moths. Each species has a unique chemical signal and I tried the one for red-tipped clearwing today and had immediate success!

red-tipped clearwing attracted to a pheromone lure

In a short time I saw perhaps six individuals, with up to three at one time. The lure only attracted them for a few tens of seconds before they seemed to become aware they had been duped. They are very fast and even at a high shutter speed I could still not stop the wing beats. As you can see they do not really look like moths and it would be easy to pass it off as a wasp. Eventually one did land on a nearby bramble allowing me to get a somewhat better picture.

red-tipped clearwing

Red-tipped clearwing caterpillars feed on willows feeding on stems rather than leaves, most clearwings caterpillars feed by tunnelling into wood and roots, making them even harder to find that the adults. A great bit of “Wild” to go with my lunch!