Here are a few recent photos from the Rowley Hills taken over the summer. Our Bee Orchids returned once again, and we had a couple of new and notable insect sightings – Black and Red Squashbug (Corizus hyoscyami) which has only been recorded once before in the Black Country, and Long-winged Conehead (Conocephalus fuscus), the first time this species has been recorded on the Rowley Hills. Both of these species are thought to be spreading northwards, probably due to climate change, so sightings are likely to increase in coming years.
On a dry and mostly sunny May morning, 27 wildlife enthusiasts assembled just inside the entrance to Bury Hill Park off the A4123 Wolverhampton Road in Oldbury, for our walk entitled ‘Portway Hill – Green Hairstreak Search’. The route planned initially involved the ascent of the grassy slope of Bury Hill Park, which at this time of year is dotted with numerous umbels of white Pignut flowers. Small numbers of Chimney Sweeper moths have been seen here in in the past but council grass-cutting restricts this moth to a few small areas where the tractor’s grass cutting blades are unable to reach. At the summit of Bury Hill Park the ground levels out and excellent views of the surrounding urban landscape can be seen. Once everyone had gathered together, we followed the path that descends into and through the oldest of the Portway Hill quarries dating back to the late 1700s. A Speckled Wood butterfly flew by, but despite a brief appearance by a brownish-coloured butterfly or moth that quickly disappeared into the dense vegetation, which we thought might have been a Green Hairstreak, nothing came of it.
This track eventually opens out onto the lower part of the land owned by the Wildlife Trust for Birmingham and the Black Country, known now as Rowley Hills Nature Reserve. The group by this time had split up into two, with the serious entomologists straggling behind searching the vegetation for insects which, on what was now turning into a very pleasant day, were becoming quite active. With such a knowledgeable group of people very little went unnoticed, and soon Dock Bug, Hairy Shieldbug and Bishop’s-mitre Shieldbug were found. Discovery of a plant bug with distinctive orange and black markings, black legs and black antennae by one of our group, was later confirmed by Ecorecord as new to Birmingham and the Back Country. Corizus hyoscyami, sometimes called the Cinnamon Bug or Black and Red Squash Bug was until quite recently only locally distributed in sandy habitats around the coasts of southern Britain, but for reasons unclear it is now rapidly extending its range to a variety of habitats inland.
Heading in a south-west direction the leading part of the group paused at the exposed cliff-face where spheroid shapes peel off in layers during weathering, and good examples of columnar jointing, caused by cracks which formed when the magma originally cooled and contracted, can be seen. It was here that a Green Hairstreak made an appearance, alighting on an Oxeye Daisy flower just long enough for two or three of the party to take a photograph. Soon it was gone and for those at the back, sadly they were not to see a Green Hairstreak, our main quarry, as no further sightings were made during the walk. We did however all get a good view of the Small Copper that obligingly settled on a nettle leaf in front of us. Not the freshest of specimens, with a piece missing from the top corner of one wing, but nonetheless always a pleasing little butterfly to encounter.
Onwards and upwards in the direction of the radio masts on top of Turner’s Hill, we passed the remains of the old double-hedgerow which at one time formed part of a track leading all the way up to Rowley Church, about a mile away. Eventually, having reached the expanse of grassland adjacent to Portway Hill at the highest point of the site, where Lye Cross Colliery once dominated the landscape, and of which sadly, no trace remains today, we looked out at a mosaic of rank grassland and flowery meadow. Ever since the land was levelled and graded with spoil from the old colliery days little has changed other than Hawthorn becoming more dominant. The overgrown Hawthorn hedges marking the old field boundaries shelter the grassland from the brunt of the cold and drying easterly winds, and in doing so provide a certain amount of protection for the many butterflies, day-flying moths and other invertebrates found here. A search of the grassland here revealed Common Blue and Small Heath butterflies, and Mother Shipton and Burnet Companion moths.
To complete our circular walk, we headed back downhill, this time taking the track on the southern side of the site, passing close to the back gardens of houses in Kennford and Wadham Close, and following the wide track along the ridge of the water-stressed banks overlooking Wallace Road, to finally exit the site near to the Total garage on Birmingham New Road. As we descended a Holly Blue was seen and a Brimstone flew swiftly by. Last year small Alder Buckthorns were planted here, with the hope that once they have established Brimstones might breed here.
Today’s visit had been very rewarding with nine different butterflies recorded; Brimstone, Common Blue, Green Hairstreak, Green-veined White, Holly Blue, Small Copper, Small Heath, Small Tortoiseshell, Speckled Wood, and also the larvae of Orange-tip butterfly on the two main foodplants of this butterfly, Lady’s Smock and Hedge-garlic.
Several moths were also seen today, Angle Shades, Burnet Companion, Cinnabar, Mother Shipton, Small Magpie, and two micro-moths, Ruddy Streak, and Cranbus lathoniellis. Additionally, both larvae and their papery cocoons attached to grass stems of Narrow-bordered Five-spot Burnet and possibly Six-spot Burnet moths were seen in places.
As to be expected, many other invertebrates were also seen. Harlequin Ladybird, 7-spot ladybird, 14-spot ladybird, 16-spot Ladybird, 24-spot Ladybird, Violet Ground Beetle, Umbellifer Longhorn Beetle, Thick-legged Flower Beetle, Cardinal Beetle, Common Red-legged Robberfly, Batman Hoverfly, Grey-backed Snout-hoverfly, Thick-legged Hoverfly, Barred Ant-hill Hoverfly, Empis tessellata, Tipula luna, Dock Bug, Bishop’s Mitre Shieldbug, Hairy Shieldbug, Tawny Mining-bee, Ashy Mining-bee, Red-tailed Mining-bee, Honey Bee, Tree Bumblebee, Red-tailed Bumblebee, Common Carder Bee, Early Bumblebee, Buff-tailed Bumblebee, Orange-legged Furrow-bee, Buathra laborator, Yellow Meadow Ant, Azure Damselfly and Common Blue Damselfly.
On Friday evening (31st August) we set up two Mercury Vapour moth traps in the old quarry at the top of Bury Hill Park. In all we lured 14 different species of moth to the traps. The two that there were most of were Large Yellow Underwing and Square-spot Rustic. Chinese Character and Mouse Moth were nice to see.
Richard Orton and Tom Hartland-Smith put on a really interesting event, explaining about the different traps that are used to lure moths and the most useful books to use for identification. The ten people who attended enjoyed a great evening and learned a lot from the experience and we look forward to further events like this in 2019.
We’ve added another great event to our autumn line-up – a Moth night on Portway Hill, Friday 31st August 2018, 8:30pm – 10:00pm. Come and join the Wildlife Trust for Birmingham & the Black Country for an exciting night of moth trapping up on the Rowley Hills. All welcome and no prior knowledge needed. Due to the Wildlife Trust having not previously surveyed the site for moths every record will be a new one for the hillside and site! This site is renowned for rare butterflies so we hope it will offer similar delights for moths. Walking boots are recommended and please bring a torch if you have one available. Meet at St Brades Close, B69 1NX, West Midlands. Please note this is a residential parking area so please park respectfully with the local residents in mind.If you are planning on attending can you please email Tomh@bbcwildlife.org.uk to express interest.
Our butterfly walk last Saturday was a great success with many Ringlets and Marbled Whites on show. We also spotted Meadow Brown, Common Blue and Small Heath butterflies, and Six-spot Burnet and Narrow-bordered Five-spot Burnet moths. A small bung impregnated with Six-belted Clearwing moth pheromone was hung from vegetation in two places where Bird’s-foot Trefoil, the caterpillar’s food plant is plentiful, and on both occasions, male Six-belted Clearwing moths were attracted to the lure. This small day-flying moth, resembling a wasp, is seldom seen although it is relatively widespread on the hillside.
Here are a few photos of some of the species seen, as well as some new aerial photos taken on the walk by Andy Purcell.