12th July 2020
We saw 4 of these Silver-washed Fritillary today, both males and females – the one in the photo is a male. This could be the result of the couple of butterflies seen last year producing offspring, and therefore the first evidence of breeding for the reserve, though they may have been here in the 1800s. They are Britain’s 3rd largest butterfly.
The very summery weather continues, though Brockadale is very parched still. There has only been a brief shower since the lock-down began
Lily-of-the-valley is out now. this is a plant of limestone woodland. Where it grows now has actually lost its trees (mainly through Dutch Elm Disease, but it is still thriving.
You need to look carefully at a plant which looks like this to check that it is Horseshoe Vetch and not Common Bird’s-foot Trefoil.The easiest way to tell them apart is by the seeds, but these are is only just in flower and the seed have not formed.
The Horseshoe Vetch flowers (usually 6 – 8) are arranged in a circle at the end of a stem, and there are several leaflets forming the leaf (if that makes sense!). The native Bird’s-foot Trefoil flower buds are tinged with red, and fewer leaflets.
I hope that the photos show the difference.
Horseshoe Vetch is only found on limestone and chalk grasslands, and mostly in the south with some on the magnesium limestone on south-facing slopes. There is a large patch in Brockadale which seems to be expanding. Bird’s-foot Trefoil is found in many areas of unimproved grassland.
We found around 50 of these handsome blue beetles on the young leaves of Alder trees which were planted by the River Went in Brockadale about 5 years ago. Bob Marsh (beetle expert) confirms that although they are found in the area, and particularly around Doncaster their main distribution is in the south, with few recorded between the 2 populations.
The beautiful weather has continued and flowers and insects have responded by coming out in their thousands. The problem now is that we desperately need rain because the limestone meadows dry out easily and the south-facing ones are hot as well.
Early Purple Orchids have appeared, but some are rather stunted because of the drought. South-facing meadows have Spring Cinquefoil, a scarce resident which is at its best in April.
Wood anemones, cover the south side of the river Went valley between Brockadale and Wentbridge in their hundreds of thousands (maybe millions)
Some more photos from Brockadale this morning. The Brimstone was lying flat and sideways against a bramble leaf, facing the sun to warm up. The orange-tip was unusually small and early in the season. The Grass Snake was on a pile of logs where we sometimes find Common Lizards, but slithered away after checking us out. It was a female at least 4ft long. The false oxlip – the hybrid between cowslip and primrose – was growing amongst cowslips, and we have more primroses this year than ever.
1st April. Brockadale.
Our first sighting was of a fox happily eating something in the grass near the village in the middle of the day – Joyce’s little camera couldn’t cope with the speeding fox. There were Celandines everywhere, lots of Barren Strawberry and Cowslips just coming out. Joyce also found the first Rare Spring Sedge spikes of the year.
And a who-dunnit – we came across two Buff-tailled Bumblebees which had been completely hollowed out from the tail end right to the head. Who would do such a thing?