October is the month when the trees are in their full autumn colours. With the shorter days and less powerful sun, the trees are no longer running efficiently and are reabsorbing the green chemical chlorophyll, leaving the brown, russet and yellow pigments as the dominant colours of the season. As the leaves drop, galls become more obvious. Many odd-looking protuberances are caused by the egg, and then the development of the grub, of numerous species of small solitary wasps. Oaks are good places to find knopper galls and marble galls. Keep an eye out for the red robin’s pincushions on the wild roses. It’s a bumper year for nuts and berries with the paths covered in acorns and beech mast, framed with the red berries of hawthorn and guelder rose.
During the warm sunny days in September southern hawker, common hawker, migrant hawker, golden ringed and common darter dragonflies were still active, along with common blue damselflies, blue-tailed, red-eyed and small red-eyed. Brimstone, peacock, large white, meadow brown, gatekeeper and common blue were all recorded during September. Comma, red admiral and peacock, our autumn butterflies, will still be on the wing during October. Queen wasps, hornets and butterflies will feed on the ivy flowers this month. Once the ‘childrearing’ has been completed wasps then turn to sweeter foods such as fruit and become more obvious. Hornets are normally uncommon and are found only in the southern half of England. However, at Stover we’ve had several sightings of these insects this summer. They are unmistakable being twice as large as wasps but less aggressive. Only the queens survive the winter, hibernating under the bark of dead trees. Bumble bee and wasp nests will also start to break up this month, along with wood ants’ nests as the ants retreat underground for the winter. Field grasshoppers carry on singing until the first frosts; listen out for a short series of chirps.
Young stoats and weasels are still dispersing making this a good time of year to spot them. Both stoats and weasels have long sinuous bodies for chasing prey into their burrows. Hedgehogs and bats will start to search for somewhere to hibernate in October. Dormice generally build a rather sparse hibernation nest just beneath the ground, often in thick leaf litter under ivy or moss. They hibernate for seven months of the year so will soon be dropping off to sleep. Roe deer young born in June have now finished suckling and are now foraging for themselves in the company of their mothers. You may see small groups of deer over the next few months as they start to gather together.
Keep an ear open in the evenings for the hoots of young and old tawny owls which have now worked out their pairings and territories. Nuthatches will start to ‘tap’ and store food for the winter. Most of Stover’s summer migrants have now left the Park to fly South. The last swallow was seen on the 19th with the last house martin and sand martin on the 29th. As these migrants leave, others will start to arrive from the north such as the winter thrushes – redwings and fieldfares. Siskins were seen on many occasions during September. This winter visitor is a small, greenish finch and can be seen feeding on the alder cones around the lake. Keep an eye out for woodcock as our resident population is vastly increased by European immigrants. Flocks of goldcrests and linnets were recorded in the grassland around the reedbeds last month feeding on the seed heads.
Tufted duck and pochard will increase in numbers as the winter progresses. Up to 12 tufted duck were present throughout September which remains a low figure compared to 29 in September 2020. No pochards were recorded. Unusually, no common sandpipers were recorded last month, however a green sandpiper was spotted in the northern reedbed area. Cormorant numbers will start to increase as autumn progresses and more come to spend the winter on the lake. The black-headed gulls will also start to move inland this month, boosting the numbers at the Park.
National Heritage Lottery Fund update – an announcement was made yesterday that the Restoring Stover Park project was successful in the Round 2 application so it’s all steam ahead ! Please keep an eye on the noticeboards, website and Facebook page for information regarding the timings of individual projects. Many thanks to everyone who assisted in getting us to this happy conclusion.