Cockaynes Reserve in high summer

At the height of the recent heatwave, an early morning around Cockaynes was very much in order. But even before 7AM it was above 20°C, and the water buffalos were already mudbathing in the shade!

This uncertain summer has turned from soggy to hard-baked almost overnight, and the vegetation is starting to look very droughted, with flowers generally at a premium..

The iconic Heather strip, a symbol of the reserve in the sense that it was the discovery of a relict sprig that helped to persuade the gravel company to adopt a wildlife-focused approach to restoration after gravel extraction, is purpling up irrespective of the weather…

… while Trailing St. John’s-wort and Common Centaury added their splashes of colour to the bleached turf.

Insects and other invertebrates were scarce, by now a familiar situation this summer, but probably more to do with the fact they were already resting in the shade than anything else:

Two were of particular note. First a Buff-tip moth caterpillar: common enough, but just look at that camouflage, pretending to be a fruiting Silver Birch catkin. And second, a picture-winged fly, a Homoneura species, probably the commonest H. notata, although internal examination is probably needed to confirm. But even this commonest species has been recorded in north Essex only once previously, from a site to the west of Colchester.

Out in the open, the only real plants attracting pollinators were Ragwort (Common and Hoary), and Common Fleabane. These were drawing some insects in, especially flies and a few bumblebees.

 

But down in Villa Wood, alongside the Sixpenny Brook, the air was more buzzy, shade from the Alders keeping temperatures down.

Best plant in the valley was Wild Angelica, its domed umbels at times alive with hoverflies, wasps and Yellow-and-Black Longhorn Beetles, and being patrolled by Hornets.

But as always, where there are few insects to actually see, there are often insects to record on the basis of not seeing the animal itself. The open sand had nest holes of digger-wasps; a leaf had a mobile ball of fluff skittering across its surface, the camouflaged larva of a lacewing, clothed in the remains of its aphid victims; and a swelling in a willow stem proved to be the gall of a gall-midge Rabdophaga salicis. seemingly uncommon in England and in fact the Essex Field Club map showing just one previous county record, in the deep south. Indeed, its national distribution as a whole is very sparsely scattered,  away from western Scotland. Always something to find!