With Charlotte away playing pickleball and Kev still busy fitting windows for family, I found myself with some free time and decided to explore the Lower Windrush Valley Gravel Pit Complex, starting at Rushy Common Nature Reserve and Tar Lakes, where pintails, two red‑crested pochards, and an oystercatcher had been reported the day before.
Rushy Common Nature Reserve lies in the Lower Windrush Valley, just southeast of Witney, off Cogges Lane between Cogges and Stanton Harcourt in West Oxfordshire. Nestled among a cluster of restored gravel pits, the reserve has been transformed into a rich wetland habitat through coordinated conservation efforts. Originally part of Gill Mill Quarry, the site was reshaped from industrial extraction land into a thriving nature reserve through a long-term restoration project led by the Lower Windrush Valley Project and its partners. From the reserve car park, permissive and public footpaths loop around the site, including routes that lead towards Tar Lakes and further into the Windrush Valley path network.
Parking at Rushy Common is free but limited to around 20 vehicles and on arrival, there were three cars - a chap was just packing up as I pulled in. Since it was my first visit, I located the direction of the bird hide, retrieved my hide key from my bag, and set off, pausing along the way to scan the water. The water was alive with activity: a grey heron, pintails, wigeon, teal, great crested grebes, coot, shoveler, Canada geese, and more.
Eventually, I reached a bend in the track and discovered that the usual puddles had expanded into a completely flooded stretch. Having chosen walking boots over wellies, there was no way I could continue to the hide - what a shame. I turned back and headed to the viewing screen in the opposite direction, from where I could scan the water and re‑spot all the species I had seen from the track, and still no red-crested pochards.
I had also planned on visiting Linch Hill Pit 18 (also known as Stoneacres Lake, particularly by the fishermen) to try and catch the two smew (drake and redhead) that had been present since 2 February. It wasn’t far from my location, but getting there required driving around the perimeter of the pit complex and through Stanton Harcourt. Observations of the smew are made from outside the site perimeter fence and through tree cover, so seeing the birds up close would not be possible. The northern roadside is fenced and where viewing was recommended to me, and if needed, a footpath runs about a third of the way down the eastern side, providing scope views of the pit.
The complex isn’t generally developed as a public nature reserve like Rushy Common and Tar Lakes, and the surrounding landscape has been shaped by decades of gravel extraction and subsequent natural colonisation and restoration. This pit is one of the larger and deeper gravel lakes in the area, with extensive open water that attracts a wide range of waterbirds and has developed a mix of aquatic vegetation, shallows and fringe habitats.
I parked in a layby, careful not to block one of the designated passing places along this stretch of the single-track road and stepped out to scan through the fence and trees. Setting up my scope, I immediately picked out the drake smew, then the redhead. I had to shift slightly to maintain a clear view, and that’s when I noticed at least four red‑crested pochards in the same area. They drifted to the right and out of sight from my initial position, so I moved further along the road to a more open gap in the hedges, and from there I was able to relocate and enjoy views of all the birds again.
The male smew is mostly white with bold black markings, and the head is pure white with a striking black mask through the eye and down the nape - the back and wings are patterned with black. It is small and compact, and highly conspicuous on this open water. In contrast the female has a grey body with a chestnut-red head and subtle white cheek patch, and although more muted than the male, is still elegant.
The birds were frustratingly distant, but their presence more than made up for the distance. Eventually, the smew that had been diving along the opposite bank took flight, flying back toward the area where I had first spotted them. I relocated once more, but the birds were frustratingly difficult to pick out through the tangle of branches and twigs. Still, I’d enjoyed the encounter and especially the bonus red-crested pochards, a species I don’t often stumble across naturally during the year.
I set off for home but then realised that Farmoor Reservoir lay more or less on the way. With that in mind, I decided to drop in and see if I could track down the common scoter I’d missed on a previous visit, after a paddleboarder had reportedly flushed it, along with several other birds, from the water.
I parked up and walked out onto the causeway between F1 and F2, focussing on F1 where most recent sightings had been reported and where disturbance tends to be lower. I began scoping the reservoir and, after a bit of patience, eventually picked up the scoter among a group of mostly sleeping great crested grebes, almost directly opposite my position.
I packed up the scope and set off to try for closer views and along the way, I stopped to watch a female greater scaup cruising along the edge of F1 in the company of tufted ducks.
I set up my scope, having closed the distance, but I could no longer locate the bird among the grebes. Had it moved out into the centre of the water? Despite scanning carefully, I still couldn’t pick it up.
I continued around the reservoir and eventually reached the area where the great crested grebes were sleeping or preening, and began scanning again. After a couple of careful passes, I picked it up once more, often diving and disappeared for long periods before resurfacing some distance away - a habit that made keeping track of it tricky.
At range, the bird appeared dark and very low-slung on the water, lacking the bold features of an adult drake but showing well enough to confirm it as an immature common scoter. It sat exceptionally low, giving a heavy, almost submerged appearance that was accentuated by the choppy conditions. The overall plumage was a uniform brown, without the jet-black tones or strong structure of a mature male.
The head was noticeably paler than the body, with lighter cheeks and face standing out subtly against the darker crown and nape. The bill was dull greyish-brown and relatively slim, showing little of the swollen orange-and-yellow knob characteristic of an adult male. In profile, the head shape appeared gently rounded, with a fairly flat crown flowing smoothly into the neck.
That was satisfying ... I’d managed to redeem myself and finally catch up with a bird that had been reported regularly but had so far eluded me. It had been a good day out, even if it was a little less enjoyable flying solo. No doubt Kev and I will have our diaries aligned again before long.
Year list: 159.


























































