Tag Archives: Gunnersbury Triangle

Skippers in Gunnersbury Triangle

Essex Skipper, dorsal view, on the north bank. The dark margin to the wings is diffuse, and the black suffusion extends tapering up the wing veins. The antenna tips seem to be dark all over.
Essex Skipper on Bramble leaf. The underside of the antenna tip is black, and again the black suffusion of the veins at the back of the wing can be seen clearly.
Distant shot across the Ramp Meadow, but … it’s certainly a Large Skipper, with those distinctive pale spots on the wings. The butterfly is indeed quite a bit bigger than the other Skippers, and the spotted appearance makes it look quite different both in flight and at rest.
This little butterfly in side view, on Ragwort, has the underside of its antenna tips brownish, which would make it a Small Skipper.
There are helpful comparison photos on the UK Butterflies Essex Skipper page under ‘Similar Species’. However, none of the antenna tips shown there look as dark as any of the Small/Essex skippers shown here.
This photo, taken on the 12th of July, shows the antenna clearly. I’d say it was the same species as the last photo, and we can see two things clearly: there’s little suffusion of black up the wing veins, and the antenna is not boldly black-tipped on the underside, both of which an Essex Skipper should have. Nor is the antenna underside specially rufous brown.

Finally on the 8th, walking round with Netty, I saw a Ringlet, its darker wings unmistakably marked with a line of little rings.

Magpie, red in beak and claw

Caution: this article contains no blood, but one of the photographs of an insect could be upsetting to sensitive readers.

Mallow beside the ramp meadow in Gunnersbury Triangle local nature reserve
A Magpie on the prowl for prey

Magpies are rather omnivorous predators, feeding on whatever they can catch – the eggs of other birds are a favourite, along with chicks, and the juicy caterpillars and larvae of insects. Unlike foxes, which will crunch up even large beetles whole (leaving wing-cases and other recognisable body parts in their droppings), they feed selectively, eating the soft abdomen of large beetles like the Stag Beetle, and abandon the heavily-armoured thorax and head. The beetles, their bodies broken and their chances of reproduction gone, clamber slowly and pitifully about, sometimes for days.

A newly-emerged male Stag Beetle in Gunnersbury Triangle, its abdomen and left wing-case removed by a Magpie, its right wing-case and legs broken.

On a happier note, we saw a Red Admiral resting in the woods on some Ivy. The Nymphalid butterflies are all getting scarce, so it was a welcome addition to the usual suspects — Brimstone, Small White, Speckled Wood, Holly Blue — on a day without much sunshine to bring the butterflies out.

Red Admiral
The surprisingly handsome flowerheads of Hemlock Water Dropwort, in the wet woodland

January: Cold. Grey. Gloomy? Not Now!

January. Cold. Grey. Gloomy.

Well, not always. On a clear early morning, Venus gleamed brightly in a deep blue sky, and the waning Moon shone over the city, giving it a wintry beauty.

Venus as Morning Star, and Moon over Chiswick

On the common later that morning, the harsh blowing-over-a-comb buzz of a Mistle Thrush alerted me to a flock of winter thrushes flying up into the trees. As they moved along, the chack-chack calls, medium size, and occasional flashes of handsomely contrasting brown and grey backs showed that most of them were Fieldfares, down here from the snowy wastes of Scandinavia or Russia to enjoy the relatively balmy warmth and accessible food of Chiswick in January.

In the Gunnersbury Triangle nature reserve, as I rounded a corner a male Sparrowhawk finished his drink in a hurry and flew up from the gravelly ditch, an intimate moment.

Putting the Gran Turismo into Gunnersbury Triangle!

The Race Team, putting the “GT” into Gunnersbury Triangle … one of the more bizarre bits of rubbish that must have flown over the fence when there was a garage next door (It seems to be the exhaust pipe of a large motorcycle; and Sarah’s jacket is from sailing races round the Isle of Wight)

Flagon and Oil Can … not to mention the hundred beer cans, dozens of energy drink cans, lemonade bottles, bits of insulation, cable, and mirror … it’s really convenient to heave your rubbish over the fence into the nature reserve, ideal place for it …

Auricularia mesenteroides, a relative of Jew’s Ear, a jelly-like fungus with indeed a mesenteric appearance. (The mesentery is the flexible membrane that ties the gut in place, in case you never did Biology dissections when you were at school.) Alick Henrici found quite a few interesting Ascomycetes, a good day for it after recent rain.

Willow Emerald Damselfly Eggs in Willow Twig

Willow Emerald Damselfly Eggs in Willow Twig. The female cuts a slit in the bark for each egg. The cuts have healed up (by now, November) leaving a bump around each egg.

Willow Emerald Damselfly (photographed earlier this year). The species is very new to Britain, having arrived last year or not long before that; and this year is the first time we’ve seen them at Gunnersbury Triangle, so it’s very exciting to see the unique egg-laying traces!

Netty with glorious autumnal Aspen twig. The colours are exactly as photographed.