Monday, 23 July 2018

YNU Spurn residential weekend. Day 1.

This is the first of a series of three daily posts on the Yorkshire Naturalists Union (YNU) VC61 residential field trip at Spurn. Most of the participants in the residential stayed in the Spurn Bird Observatory, while myself and the trip organisers, Sarah and Ken White stayed at Westmere Farm B&B. I arrived early on Friday with family and some friends and stayed most of the morning on the beach just off the YWT Discovery Centre and around Clubley's Scrape (the top shot is taken from the coastal path looking towards the Discovery Centre (on the background). The weather was absolutely fantastic for insects throughout and we made the best of it.
Sandwich Terns
During the whole of the weekend, the calls of Sandwich terns provided the background noise as adults moved back and forth over the peninsula. The adults would be carrying fish and were often being followed by their fledglings. Sandwich Terns do not breed at Spurn, but ringing recoveries indicate the birds have bred in Dutch islands. After breeding, individuals gather at Beacon Ponds and fish offshore from Spurn. At dusk, flocks collect to fly to sandbanks off the Lincolnshire coast to roost. Over a thousands have been counted at Spurn during this time of the year. We saw many scaly backed young at Kilnsea Wetlands and Beacon ponds. Sandwich terns winter in West Africa and Arabia and they are a stark reminder that migration is not a simple north-south movement and that often includes local and regional movements to good feeding grounds, resting, moulting and roosting.
A Sandwich Tern with gulls loafing at Kilnsea Wetlands. I watched an adult Mediterranean Gull also in the same spot.

Beach Combing
The north sea was so flat the kids practiced at skimming stones.
A large beached Edible Crab, Cancer pagurus
Ringed Plover demonstrating its superb camouflage on the shingle.
We found some egg cases of the Lesser Spotted Dogfish, Scyliorhinus canicula. Identified with the Shark Trust identification key for egg cases.
Some of our party crossing the breach. This is the section of the peninsula that was washed over by winter storms in December 2013. It is walkable most of the time, but not at high spring tides. Check tide-times before attempt crossing the breach.
Graham and Mike found and excavated an almost complete skeleton of a Harbour Seal, Phoca vitulina, under the tarmac of the old road. They donated it to the YWT.
Insects
Spurn is well known as a bird migration hotspot, but it is also a great spot for insects as it has many diverse habitats.
A Scaeva pyrastri hoverfly, a known migrant that often appears in the wake of heat waves.
Magpie Moth, Abraxas grossulariata
Six-spot Burnet, Zygaena filipendulae, a day flying moth.

Saltmarsh
A short stroll from the breach back to the discovery centre allowed us to watch the patches of flowering Sea lavender scattered on the green marsh. It was high tide and a group of Golden Plover and Whimbrel were resting on the edge of the marsh.
Clubley's Scrape
Clubley's Scrape is a well hidden gem at Spurn, as it is not visible from the coastal path or from the road to the peninsula. It is a set of three shallow ponds excavated in 1992. All held water, although were much lower than usual. I spent some time watching dragonflies there.
One of the Clubley's scrapes.
Male Black-tailed Skimmer resting on the dry mud, a typical activity of this species.
A male Emperor patrolling its scrape empire.
Male Common Darter on a board. Several pairs were ovipositing on the scrapes.

Canal Scrape Hide 
I spent a few minutes watching the Snipe from the hide at Canal Scrape. A pair very close to the hide windows.
Snipe.
Snipe.
One of the Swallows breeding inside the Canal Scrape hide.
Westmere Farm and Kilnsea Wetlands
After settling in my accommodation I walked through the farm footpath to Kilnsea Wetlands. A Small Tortoiseshell and a Red Admiral fluttered on the hedgerows and field edges, which had many flowering thistles. I spotted the shapes of two hares on the crop. They run to the other side of the field.

Brown Hares.
One of the scrapes at Kilnsea Wetlands, holding a pair of Avocets with a grown chick.
I spent some time in the hide at Kilnsea Wetlands. It is best at high tide, when waders and gulls move in from the mudflats, but there were many birds still.
Dunlin. 
Lapwing.
Knot.
Avocet and chick.
Flock of Sandwich Terns fly over.
A Pied wagtail hovers gathering insects from the shore surface.
Five Pied Wagtail fledglings descend upon the adult to be fed.
The stunning sunset view we got when walking back from a meal at the Crown and Anchor pub.

Monday, 16 July 2018

Oakhill and Brick Ponds

A warm, muggy morning with sunny spells spent at Oakhill and the Brick Ponds area on the outskirts of Goole. This was my first visit to the site, a local nature reserve own by East Yorkshire City Council and managed by Friends of Oakhill. The site is an flat area enclosed by railway lines and where old brick ponds are now managed for wildlife. There are wooded areas and well vegetated ditches. There is also a series of small ponds near the brick ponds. The visit started well, with a Southern Hawker checking me out at the car park. The new access road runs by the Tesco distribution centre. There were hawkers on the wing, including some likely Migrant Hawkers, but they didn't settle so I only identified a Brown Hawker, of which there were three more. 
A ditch near the brick ponds.
Butterflies
The most striking today were the plentiful fresh Peacocks (above), but I also recorded Gatekeeper, Ringlet, Speckled Wood, Small Tortoiseshell, Small Skipper and Green-veined White.
Small Tortoiseshell.
Five-spot Burnets mating.
Green-veined White.
Peacock at rest.
An unusual angle of a Speckled Wood.
Peacock on Teasel.
Small Skipper.
Ringlet.
Birds
Jays were in evidence throughout the morning, possibly a family group judging by their noisiness. After crossing the railway line I stopped in my tracks when I heard the lovely purring of a Turtle Dove. It was singing from a large hawthorn by the path but no chance of spotting it. After a while I carried on but 50 m ahead another was singing from the other side of the path. I am sure it must have been another one as I didn't see any flying. Turtle doves are known in the site, but I just wasn't expecting this and I made my day! Other bird highlights included a Kingfisher on the smaller brick pond.
Moorhen on the large brick pond.
Young coots and parent in the small brick pond.
The small brick pond.
Dragonflies
Oakhill has rapidly become a top odonata site for Yorkshire, and the species list of 18 species in 2017 is very impressive and includes Small Red-eyed Damselfly, Hairy Dragonfly and Red-veined Darter, which likely bred last year. I had 10 species, not counting the unconfirmed Migrant Hawkers. On the path after the railway crossing I had my first Ruddy Darter of the day. The small brick pond was a great site, with a patrolling Emperor and a Brown Hawker. At some point a Common Hawker (sp 21 for my Yorkshire Dragonfly Quest) took over, which I managed to photograph in flight as it hunted near the shore, weaving into the branches and plants in search of females, hovering at times and coming very close to me. Azure Damselflies were abundant, and there were at least three Red-eyed Damselflies visible from the shore and a Common Darter. I spent the main part of the morning around it. Both ponds have convenient pond-dipping platforms and seats at regular intervals. By one of the small ponds, an unusual fluttering darter caught my attention, when it settled I saw it was a female Black Darter (sp 22 for the Yorkshire Dragonfly Quest).
Azure Damselfly 
Male Common Darter
Red-eyed Damselfly.
Record shot of Male Common Hawker.
Blue-tailed Damselfly.
Several common darters took their maiden flight away from the ponds as I approached them. 
One of the small ponds.
Male Emerald Damselfly. 
Black Darter.
Ovipositing Azure Damselflies.
A very blue female Emperor ovipositing.
A Ruddy Darter looks up...
...and down.
This carrion beetle larva was under a dead rabbit.
On the way back it was cloudier, but still very hot. A Grass Snake slithered from the path onto the side vegetation, a great end for a great day out.

More information
East Riding of Yorkshire Council nature reserves website.
Friends of Oakhill Website.