Mouldy Old Day

On my way to open up the hides this morning I found another slime mould on a log near the Woodland hide. More regular readers will perhaps know I am rather fond of these bizarre organisms. This morning’s species was the coral slime mould Ceratiomyxa fruticulosa and it resembled a hoar frost in colour and shape.

coral slime mould

coral slime mould

I spent the day working with the volunteers continuing to develop the new area of grassland beside the path through the old concrete works. Before anyone asks, no I don’t have an opening date for the path yet, but I hope it will be reasonably soon. We were doing some cutting, but also a lot or raking up and it was remarkable how many young common toad there were in the area, certainly many tens and probably hundreds, clearly it is an important area for them. The seeding we did back in the spring has worked surprisingly well considering how dry it was, although it seems to be making up for that now. There are lots of young bird’s foot trefoil and ox-eye daisy plants coming up so it should look pretty good in a year or two.

At the end of the day I set off to lock up the hides and my eye was caught by something brilliant yellow, another slime mould! This time troll butter, it is almost dayglow in brightness.

troll butter and very small beetle

troll butter

It was only when I downloaded the picture that I noticed the tiny beetle.

 

 

On the Hop

On Tuesday we were working on the western shore of Ibsley Water again with the volunteers. Over the years we have been controlling ragwort and nettle that used to be the dominant here to convert it to grassland, at last we are seeing some real results. Much of it is now mainly grass with a good range of herb species, especially bird’s-foot trefoil. We are also seeing a lot more butterflies and other insects, marbled white are especially frequent in the grass there now.

As we worked I heard a lot of Roesel’s bush-cricket and saw field grasshopper and meadow grasshopper. The grassy sward is not ideal for all species though, the mottled grasshopper likes grassland with lots of bare ground and very dry conditions, at Blashford they are mostly found on the lichen heath.

mottled grasshopper male 2

mottled grasshopper (male)

One distinctive thing about the males of this species is that the ends of the antennae are bent out and swollen, they are also our smallest grasshopper. The males were chirruping, or more correctly stridulating, the object of this is to attract a female and I found one that was evidently playing the right song.

grasshopper pair

mottled grasshopper pair

The females are quite a bit larger and have more conventional grasshopper antennae.

30 Days Wild – Day 22: Punctuated

It was thankfully cooler today which allowed us to do some work along the open western shore of Ibsley Water. As it was Thursday the “us” was the famous Blashford volunteer team. We were trimming brambles and pulling ragwort. I know ragwort is a great nectar source, but in this case we are trying to establish grassland where there has been bramble, willow and nettlebeds, this means mowing, but as we have ponies on site we need to remove the ragwort first. Ponies will rarely eat growing ragwort, but if cut and mixed in grass they will and so can get poisoned.

This shore was dominated by huge beds of ragwort and nettles but years of cutting and light grazing are taking effect and we now have mostly grassland with patches of ox-eye daisy, bird’s foot trefoil and other more desirable species. In turn this is attracting insects such as long-winged conehead.

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long-winged conehead, female nymph

We saw a good few butterflies including good numbers of comma. It seems they are having a very good year and the fresh summer brood emerging now is particularly strong. This generation will breed and produce another generation of adult in the autumn which will them hibernate.

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comma

They get their name from the white comma-shaped marking on the under-wing, which is not visible in this shot. Their ragged wing outline makes them less butterfly-shaped and so harder for predators to find, this is especially so when the wings are closed.

I ran two moth traps last night, only about 50m apart, but one under trees and the other in the open. An illustration of what a difference location makes is seen from the number of hawk-moths caught. The one in the open contained 8 elephant hawk-moth, a pine hawk-moth and 2 poplar hawk-moth, whereas the one under the trees contained just one eyed hawk-moth.

As you will have gathered from this blog, I am a fan of insects in general, even horseflies, although I am less keen on them when they come into the office as this one did today.

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Chrysops relictus female

It is the females that bite, so it would be better if this one went outside again.

 

30 Days Wild – Day 15: Trying to Impress

I was out on the eastern side of Ibsley Water with the volunteers this morning to clear the areas we cut and which are grazed by ponies of ragwort. It is toxic to animals, but they will usually not eat when it is growing, however they will if it is cut and gets mixed with grass or hay. At one time it was one of the commonest plants in this area but now it is much reduced and overall the grassland is looking much better, with quite a good range of species. A couple of highlights this morning were several patches of corky-fruited water-dropwort.

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corky-fruited water-dropwort

Corky-fruited water-dropwort is an Umbellifer, one of the carrot family and is very attractive to insects, this one had lots of pollen beetles on it. It is quiet frequent in unimproved grasslands in a swathe roughly south of the M4, so it is pleasing to see it at Blashford where the grassland is still recovering from the ravages of mineral extraction. Another find was knotted clover, a plant of dry sandy places, often near the coast, I am not sure if I have found it at Blashford previously.

knotted clover

knotted clover

At lunchtime I tried the pheromone lures for clearwing moths again, completely without success. However I did spot a handsome black-and-yellow longhorn beetle.

black-and-yellow longhorn beetle Rutpela maculata

black-and-yellow longhorn beetle Rutpela maculata.

After doing various odd jobs in the afternoon I went to lock up the hides and found a pair of crab spiders on a hemlock water-dropwort flower head, The male is quite different from the female and a lot smaller so he has to tread carefully if he is not going to get eaten.

crab spider pair

crab spider pair

It seemed it was not only the spiders that were making plans, on a nearby ox-eye daisy I saw a female hoverfly Eristalis horticola, with a male hovering low over her and darting from side to side. I am not sure if she was impressed but he was trying hard to dazzle her with his advanced hovering skills.

Eristalis horticola pair

Eristalis horticola pair

I also found another slime mould, on the same log as the one the other day, although this was clearly a different species.

slime mould

slime mould

The only new bird sighting of note today was of a first summer little gull as I locked Tern hide. It was pleasing to see that the single oystercatcher chick from gull island has fledged and that the remaining one near Tern hide is close to doing so. In additions the single large lapwing chick is also close to flying and two of the smaller ones are still going strong. Even better was a sighting of two well grown little ringed plover chicks today. On Ivy Lake the common tern chicks are growing well and most broods seem to still be of three chicks.

30 Days Wild – Day 13: Gulls get Rings

Tuesday is one of our two regular volunteer days at Blashford Lakes, this week’s main task was further work to improve the grassland habitat along the western shore of Ibsley Water. We have had a long-term project to remove bramble, nettle and willow that has been threatening to take dominate. This shore was remodelled into a steep bank using the topsoil removed from the gravel pit surface when it was first dug, conditions ideal for the development of nettle beds and bramble thickets. To reverse this we have been mowing to allow grass and perennial herb species to get the upper-hand.  This has been targeted work aiming to take out only the least desirable species. Even the nettle beds have elements that we leave, such as any patches with nets of peacock and small tortoiseshell larvae.

peacock caterpillars

peacock caterpillars

Alongside the nutrient-rich soils there are poorer patches and these have a more interesting flora including a number of bee orchid.

bee orchid and mower

bee orchid

At the end of the day I went out to Gull Island in Ibsley Water with the bird-ringers to colour-ring a sample of the black-headed gull chicks. We have been doing this for a number of years to find out where the birds from this recently established colony go to and if the chicks reared here return to breed in later years. We managed to catch and ring thirty chicks during our short visit, a good sample.

209C gets ringed

209C gets a ring, where will it go and will it come back?

In the evening I came across a female stag beetle on the fence in the garden, the first female I have seen this year. The day ended on a fine calm note and so I decided to head out to listen to the nightjar again. One came and perched on a branch very close by and gave great views. I never tire of watching and listening to nightjar and to have the opportunity to do so just a few minutes walk from home is wonderful.

30 Days Wild – Day 8: Flowers in the Rain

Thursday is volunteer day at Blashford and it is well known that it does not rain when the Thursday volunteers are working, but today something went wrong and we got wet! We were continuing with our project to create a diverse new grassland along what used to be the entrance to the old concrete plant, we have spread seed and cleared brambles. Now we are going back to continue with cutting back the bramble regrowth and discourage nettles and some of the denser stands of creeping thistle.

A lot of the seed we spread has germinated but is has a lot that was already there lying dormant in the seedbank. This includes some with famously long-lived seed like poppies.

poppy

poppy

Poppies used to be a common “weed” of agricultural crops but these days are effectively controlled in most by herbicides. Another such agricultural weed was field pansy, which has also appeared.

field pansy
field pansy flower

Several species of thistles have grown up too, alongside the creeping and spear thistle there are a few musk thistle, not yet flowering, but the symmetry of their flower buds appealed to me.

Musk thistle bud

Musk thistle in bud

We also have a good showing of mullein plants with both dark mullein and great mullein, a few with mullein moth caterpillar on them. Both species have tall spires of yellow flowers, however the individual flowers are very attractive on their own.

dark mullein flower

dark mullein flower

I have high hopes for this area, it has many of the attributes you need for a herb rich grassland, a mostly poor, thin soil and a sunny aspect, if we can establish a tight sward it could become a real asset for to the reserve, good for plants, insects and close to the path and so easy to see.

My last shot of the day is also of a flower but in this case it is what was sitting upon it that was the main attraction. The flower is an ox-eye daisy and on it is a male red-eyed damselfly, I find this a difficult species to get a picture of, as they usually spend their time sitting on floating pond weed well out in the water, so one away from water was too good to miss.

red-eyed damselfly on ox-eye daisy

red-eyed damselfly on ox-eye daisy

This is what we should now call the large red-eyed damselfly, rather than the smaller newcomer to these shores, the small red-eyed damselfly, which tends to fly later in the season.

Although I did get wet, it was not cold and being out in a bit of weather from time to time has its own appeal, albeit in moderation. Let’s hope for a bit better tomorrow.

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

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 coming to lure

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

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!