At this time of year no plant in our Sheffield city garden feeds more Butterflies and Bees than Marjoram, which spreads easily but is easy to control. Just right for taking part in the Butterfly Conservation 15 minute Butterfly Count– easy to download an app- with an identification guide if you need it. This week it attracted a (tattered) Ringlet, the first one we have seen here, and a favourite Gatekeeper, as well as the Small Skipper. Conditions: Cloudy with sunny spells. Temperature: Max 20- Min 15C.
The small, beautiful Holly Blue butterfly, the only blue we get in our garden and the one you are most likely to see in parks and gardens in England and Wales, flitting low and fast, is back feeding on our flowers. Numbers of Holly Blue fluctuate greatly, thought to be due to the variable numbers of the parasitic wasp which lays its eggs in their caterpillars. The caterpillars feed on holly as the name suggests, but also on dogwood, spindle, snowberry and other common bushes. The female has a dark edge to the wing. Conditions: cloudy after heavy rain. Temperature: Max 19- Min 13 C.
Purple wild flowers– the jury is out as to whether purple and mauve flowers really attract more pollinating insects, and they see colour so differently to our eyesight, as they extend into the ultra violet spectrum, but there are certainly many purple wild and garden flowers out at this time of year. Here are some wild flowers to watch out for, some of which we have in the garden, others which are common in towns and the country hedgerows, riversides, and wood edges. They attract so many hoverflies, bees and butterflies, it is a joy to study.
More ‘sunning’- with so much competition for space in the sunniest part of the garden early in the week, the Wren, Robin and Blackbird were squatting and
sunning anywhere they could find a surface- even joined by one of the Grey Squirrels. (For an explanation of sunning see yesterday’s blog). Conditions: Cloudy, muggy day. Temperature: Max 22-Min 13c.
‘Sunning; Wren- the bird most frequently ‘sunning’ in our garden, and anywhere, is the Blackbird. Yesterday and today the Dunnock, Blackbirds, Robins and this Wren were sunning- spreading their wings and tail feathers, fluffing up their soft, downy body and head feathers, deliberately positioned to get maximum sun onto them. There are many theories about why birds ‘sun’ but one reason seems to be to control their body temperature, since birds can’t perspire. This Wren was in and out of sun and shade, and was also gaping with its bill to cool itself. Another is thought to be to stimulate the oil from its preen-gland, on the base of a birds’ back- seen in one photo of the Wren- the oil is used to condition and waterproof feathers. Sunning
is also thought to activate mites and parasites so they are more easily cleaned off by preening. Conditions: Hot, sunny with a breeze. Temperature: Max 23- Min 14C.
Banded Demoiselles, featured yesterday, are so highly territorial that I watched these two males for 15 minutes, in an utterly fascinating, extremely speedy and acrobatic aerial battle over a few feet of canal. Very hard to photograph but beautiful to watch, especially with perfect reflections of both as they flew.
I had to give up before they resolved the conflict. The male guards the female closely while she lays her eggs and both male and female, so deft and fast in flight, catch insects on the wing. Conditions: Sunny intervals. Temperature: Max 20- Min 12C.
The Banded Demoiselle– it was such a treat to watch many of this beautiful, petrol blue Damselfly along the Chesterfield Canal. On the wing from May to August this stunning insect lives on still or slow flowing waters, in England and Wales. Unmistakable, this is a large Damselfly, over 4cm long with a wingspan of her 6cm. The bronze and green coloured female lays the eggs on marginal plants under water, breathing by trapping air between its wings, while the male watches on and guards her. As with Dragonflies, the eggs hatch and the larvae live underwater for two years, predating insects, before climbing out onto a leaf or stem and emerging from the larval case, during off and flying off. Condition: Rain and cloud. Temperature: Max 20- Min 17C.