Autumn Flight

Definitely feeling autumnal now, with the evenings getting rapidly earlier and a generally cooler and windier feel to the weather. There are still signs of summer when the sun comes out, dragonflies such as migrant and southern hawker and common darter are still out and about as are a fair few butterflies. This peacock, looking so fresh that I wonder if it was a second generation individual, was feeding on Inula hookerii beside the Centre a couple of days ago.

A very fresh peacock

Peacock butterflies over-winter as adults and emerge in spring to mate and lay eggs, sometimes they survive well into mid-summer, the caterpillars then feed up and pupate and a new generations hatches from July and after feeding up hibernates. However in very warm years they sometimes lay eggs and produce a summer brood as small tortoiseshell and comma do.

There are also lots of speckled wood around at present, these follow a quite different strategy, having several broods from early spring until late autumn. They are one of the only butterflies that can be seen in every week from late March to the end of October as the generations overlap.

speckled wood

There are a fair few autumnal moth species, some of which also overwinter as adults, one of these is the brick.

brick

Some others fly only in the autumn and over-winter as eggs, one of these is the magnificent merveille du jour, one of my favourite moths, not rare, just very splendid.

Other autumn species include deep-brown dart,

deep brown dart

and brown-spot pinion.

brown-spot pinion

We are still waiting for a Clifden nonpareil, perhaps oddly we have yet to catch one this year, despite the fact that they seem to be having one of their best years in living memory, with individuals turning up widely across the country.

Arrivals and Sightings

A quick update on the last couple of days. Yesterday I was working with the volunteers near the Lapwing hide, on the way there I flushed two water pipit from the shore and later one was showing really well at Goosander hide. These birds like the exposed stony shore and the piles of washed up weed, so they should be very happy with things at present with the lake so low. They winter in small numbers in the UK, but breed in the Alps, a rather odd migration strategy on the face of it.

Colder weather has heralded the arrival of more winter wildfowl, in particular goldeneye, which first turned up last weekend and have risen in numbers daily since,  today I saw 14 birds, including four adult drakes. Goosander numbers have increased markedly too, and I counted 51 at roost yesterday. There are at least two great white egret still on the reserve and two marsh harrier were seen yesterday, with at least one again today.

The colder nights have significantly reduced the catches in the moth trap, but despite this the last two nights have produced “November” moths Epirrita spp. , grey shoulder-knot, yellow-line Quaker, brick, satellite and black rustic.