Showing posts with label white-rumped sandpiper. Show all posts
Showing posts with label white-rumped sandpiper. Show all posts

Tuesday, 11 August 2026

RSPB Snettisham :: 01 August 2026

Having been unable to travel up to Yorkshire with Kev @kev07713 and Karen, and consequently missing both buff-breasted and white-rumped sandpipers, it was rather fortuitous that a white-rumped sandpiper appeared at RSPB Snettisham in time for our regular Saturday birding trip.

We set off at 4.30am, hoping to arrive ahead of the high tide and catch the bird as it was pushed closer towards the shore. After arriving, we began the reasonably long walk from the RSPB car park down to the shore. Within minutes, we heard the unmistakable call of a turtle dove.

We quickly located it, only for two birds to fly over before one settled in a tree some distance away. We stopped to enjoy the views, and as I moved on, Kev dropped back to the car to collect his glasses, just in case he needed to phonescope anything, as focusing was so much easier with them.

Turtle dove

I reached the shore and started working through the dunlin and ringed plovers along the water’s edge, hoping to pick out the white-rumped sandpiper amongst them. As I made my way along, Kev caught me up and we continued together, pausing to watch the red knot swirling in the distance.

There were an impressive 56,000 red knot recorded here during the Wetland Bird Survey (WeBS) count at the beginning of the month, and the sheer number of birds was evident as they wheeled above the Wash. Their flight patterns and constantly changing formations were remarkably reminiscent of starling murmurations.

As the tide pushed further across the mudflats, flock after flock of red knot lifted from the water’s edge, thousands of birds twisting and turning in unison above the Wash. The flock moved almost like a single living organism, constantly changing shape as the birds responded to one another, alternately flashing dark and silver as they banked and caught the light.

The sheer scale of the spectacle was difficult to take in. Wave after wave of red knot rose from the shore, filling the sky before settling back down onto the pool behind, only to erupt into flight moments later. It was an incredible display, made all the more impressive by the vast numbers involved.

No sign of the white-rumped sandpiper though.

Red knot
Red knot

We continued working our way along the shore, picking out two peregrines, six kestrels, and a buzzard quartering the land beyond the mudflats. Along the remaining shoreline was an impressive array of curlews, godwits, shelduck, redshank, dunlin, red knot, Mediterranean gulls, and more, all feeding along the water’s edge.

Out in front of us, streams of little terns and a handful of common terns headed out across the Wash, setting off on fishing trips as the tide continued to push in. The latest verified local eBird log for RSPB Snettisham recorded a specific group of 117 little terns on the reserve - reports suggest this area of the coastline supports an average of 314 breeding pairs.

Little tern

According to the latest (unverified WEBS) count there were 56,000 red knot, 3,943 dunlin, 4,500 oystercatcher, 2,050 black-tailed godwit, 1,435 bar-tailed godwit, 1,560 shelduck, 1,270 curlew, 1,270 grey plover, 1,124 redshank, 662 sanderling, 424 ringed plover, 226 turnstone, and 40 Mediterranean gulls amongst the other species.

There are so many waders here at the moment because yit is the start of the autumn migration period, when The Wash becomes an extremely important feeding and staging area for birds returning from their Arctic breeding grounds.

A few things are happening simultaneously:

  • Red knot are arriving back from the Arctic. They make the enormous journey south from breeding areas in places such as Greenland, Canada and Russia. The Wash's extensive mudflats provide an exceptionally rich food supply for them to refuel.
  • Dunlin numbers are building too. Late summer onwards is an important period for Dunlin on UK estuaries and mudflats, with birds arriving from further north to spend the winter here.
  • The Wash is an exceptionally productive feeding area. The huge expanses of exposed mud provide worms, molluscs and other invertebrates, allowing enormous numbers of waders to feed together. The RSPB describes the area as having "world class mud" - essentially, the food supply is what drives the congregation of birds.
  • The tide concentrates them. At low tide the birds can spread across vast areas of mudflat to feed. As the tide rises, that feeding habitat disappears, forcing them towards the shore and Snettisham's roosts. The birds spread across The Wash to feed, then become concentrated at Snettisham as the tide comes in.

Looking back along the shore, we could see a group of birders gathered at the point where the path from the car park joins the coastal path. In front of them was a sizeable gathering of waders, although at that distance we couldn’t make out exactly what they were.

At this point, we checked BirdGuides and saw that a report had just been posted for the white-rumped sandpiper further back along the track, with the sighting subsequently confirmed by another birder who had seen it. Had we somehow missed it, or had the bird already moved from there, perhaps onto the pools or with the distant waders?

We headed back towards the group, only to find that they were already moving off. What they had been watching was predominantly sanderling, with a few dunlin, redshank, ringed plovers, and a couple of turnstones mixed in. The white-rumped sandpiper was still nowhere to be seen - we'd arrived 15 minutes too late for the close views described by others.

Ringed plover
Sanderling
Sanderling
Sanderling
Sanderling
Sanderling
Sanderling

After a short while, we walked back up the path to where a growing group of birders had gathered, all scanning the mudflats as the tide began to drop once more. We worked our way through the flocks, commenting that each time we made a sweep, the birds seemed to have relocated further along to the latest stretch of exposed sand.

Some of the birders began making their way back along the shore, and we followed, step by step. Every so often they would stop and scan again, only to move on once more, with us gradually catching them up.

Then, at one point, a couple of birders came hurrying back towards us. They had seen the white-rumped sandpiper, but it had flown and landed beside a channel, where it had quickly disappeared from view. We had missed it again! We scanned and scanned but could find no sign of it. Apparently, the white-rumped sandpiper had left with a group of dunlins, and a small flock was later seen flying off to the right, which probably included our elusive bird.

We moved further to the right and began scanning the area, working through the dunlin and redshanks as more birds gradually filtered through from that direction. While I continued searching from this spot, Kev carried on along the path following a couple of the remaining birders.

About ten minutes later, my phone rang. One of the birders had located the sandpiper, and I immediately set off at a brisk pace along the path and a few minutes later, I caught up with them and, at last, was within reach of our target bird.

It took barely a minute to pick it out among the birds on the mudflats, but then there it was - first in my scope, then in my bins, and finally in front of my camera lens.

The white-rumped sandpiper is a rare but regular vagrant to Britain. It breeds across Arctic Canada and winters mainly in Patagonia, but its transatlantic migration route brings small numbers to Britain and Ireland, particularly during late summer and autumn. To make things even more challenging, it is roughly dunlin-sized and can be surprisingly difficult to pick out amongst hundreds or even thousands of its smaller counterparts. The combination of long wings, a relatively long bill, prominent white supercilium, and streaking extending onto the flanks can be particularly useful when separating it from dunlin.

With the Wash attracting enormous numbers of passage waders at this time of year, perhaps it is not so surprising that the occasional Nearctic vagrant finds its way into these vast gatherings of otherwise familiar species. For a bird arriving from the other side of the Atlantic, the rich feeding grounds of the Wash must provide an ideal place to stop, refuel, and continue its journey.

White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper

Walking to the next group of birders we heard that there were two little stints and it wasn't long before we located one, feeding amongst the seaweed and dunlins. The little stint is Britain's smallest regularly occurring wader, at only about two-thirds the size of a dunlin. It is seen mainly on spring and, especially, autumn passage. British birds breed in northern Scandinavia and north-west Russia and winter around southern Europe and western Africa.

The important distinction is that little stint isn't normally expected in the huge tidal flocks of dunlin at Snettisham in quite the same way. You're more likely to find one feeding around the edges of pools or amongst smaller wader gatherings. This makes finding one a matter of carefully checking the less obvious birds rather than simply scanning the main knot/dunlin spectacle.

Little stint
Little stint

On the way to the shore from the car park I'd seen a wall butterfly - a species that Kev had not knowingly encountered previously and so on the way back to the car we stopped regularly and searched. We were eventually rewarded by a couple of views, one relatively close. We struggled to get open wing photographs and the only individual that compiled was a bit worse for wear.

The wall is a beautifully marked butterfly, its orange-and-brown wings patterned with dark lines and prominent eyespots. The most striking feature is the large black eyespot with a white centre near the tip of each forewing, complemented by a series of smaller eyespots along the hindwings. When settled with its wings closed, however, it becomes much more cryptic, the mottled grey-brown underside blending remarkably well with dry grass, bare earth and stones.

The wall is a butterfly of short, open, sunny grassland, particularly where there are patches of bare ground. Typical habitats include coastal cliffs and dunes, quarries, railway embankments, grassy tracks and field margins. The caterpillars feed on various grasses. It is particularly associated with warm, sheltered places, and adults often bask on walls, rocks, bare ground and other sunny surfaces. Males can be quite conspicuous when they patrol low over the ground looking for females.

The wall has experienced a very substantial long-term decline. UKBMS data show an 82.8% decline since monitoring began in 1976. Interestingly, the national index has been more stable over the last 20 years and has increased over the last decade, although this doesn't undo the much larger historical loss.

Wall brown butterfly
Wall brown butterfly
Wall brown butterfly

With a three-hour journey home ahead of us, it was time to make tracks, but not before stopping at the café just outside the reserve for a well-earned spot of lunch.

Year list: 272.

Wednesday, 31 July 2024

RSPB Snettisham :: 27 July 2024

I so wanted to go for the spotted sandpiper at Cheddar Reservoir and many of my friends had managed to do so over the last couple of days, but at work there were things to do and no opportunity to drop out. I am desperate to connect with one as I missed the individual at Upton Warren a couple of years ago - this error of judgement comes up from time-to-time.

On Friday night I discussed birding options for the following day with Kev @kev07713 and he said that the traffic had been horrendous when he'd visited that day and that he would skip a return for seconds on this occasion (he had been on the road for 10 hours but only with the bird for 1½) - in any case, given the disturbance from birders getting closer and closer and eventually flushing the bird, he expected it to depart overnight in clear conditions (in fact it did depart and so it was a great call to do something else).

The obvious next choice was RSPB Snettisham offering an array of waders; another good reason for visiting there was to meet up with Kev's sister Karen @hobbylovinglife and her partner Dean @worlebirder who planned to do the same.

I picked Kev, Karen and Dean up from Kev's house at 05.00am, Karen and Dean having travelled up to Banbury in the early hours from Gloucestershire. We didn't have to get there too early as it is best to plan visits around high tide for the best chance to see large flocks. High tide would be 11.10am but we needed a couple of hours before to hopefully catch the semipalmated sandpiper as the tide came in, and before the birds were flushed onto the freshmarsh lagoons and up the coast.

We stopped in Kings Lynn for a leisurely breakfast and as we were finishing up Alan Boddington @alanbodd sat down at the table beside us - we had a good natter. Eventually we all set off heading for the Snettisham with a report on BirdGuides that the semipalmated sandpiper had been located.

Arriving in the car park we set out seeing ducks and gulls on one of the lagoons, with a dozen or so Egyptian geese. We moved quickly but listened out as we hoped to connect with the turtle doves this site is known for.

Egyptian goose

Turtle Doves prefer open woodlands, hedgerows, and areas with scattered trees and bushes. They are often found in farmlands, gardens, and scrublands; primarily feed on seeds, particularly those of arable weeds and cereals. They forage on the ground and are often seen feeding in fields and along field margins. They are summer visitors to the UK, arriving in late April to May and departing by September. During this period, they can be seen and heard here at Snettisham.

Their distinctive purring call can help locate them in dense vegetation, hedgerows and field edges where they may be feeding or perching.

Onto the sea wall we could see a congregation of birders a couple of hundred metres ahead - we stopped with a birder looking through his scope, finding that he was on a turtle dove. It wasn't calling but was perched atop a line of bushes at some distance - it would be the only one we'd see. The most recent estimates suggest that there are fewer than 2,000 breeding pairs of turtle doves remaining in the UK. This number represents a drastic decline from previous decades, so is a special encounter. Regardless, we had a date with the semi-p sandpiper and so pushed on.

Turtle dove

The semipalmated sandpiper is a small shorebird native to North America and a rare vagrant to the UK with only sporadic sightings, usually involving single birds. They undertake long migratory journeys from their breeding grounds in the Arctic to their wintering grounds in South America. Most UK records occur during migration periods, particularly in August to October.

In breeding plumage, they have a mottled brown back, white underparts, and a distinctive black centre stripe on their crown. In non-breeding plumage, they are more uniformly greyish-brown above and white below. The name "semipalmated" refers to the partial webbing between their toes, which can be a helpful identification feature.

We joined the birders already in place and they put us on the bird - we had views through the scopes, but the distance made it tricky to capture anything but a dodgy record shot; it didn't help that I'd left the camera on full frame which made it even harder to pick out the bird. This was a lifer for Karen, and she excelled with her photos (here) which were much more detailed than mine - the extra reach with her bridge camera. There was no chance we’d be able to see the webbing on the feet.

Semipalmated sandpiper
Semipalmated sandpiper

We watched the bird for a while, but it didn't seem to be making any effort to close the gap to us. Numbers of little terns, a couple of Mediterranean gulls, and sandwich terns flew through with significant numbers of godwits, knot, dunlin amongst others feeding on the mud. Suddenly there was an eruption of waders into the sky, and we followed them as they swirled around - the reason for the agitation soon became clear as two Arctic skuas appeared, one of each of the colour morphs: a dark morph (uniformly dark brown) and a light morph (paler underparts with a dark cap and back).

The Arctic skua is a medium-sized seabird with a sleek, dark body and pointed wings. They are notorious for their piratical behaviour, often chasing and harassing other seabirds to steal their food, a behaviour known as kleptoparasitism. They are agile fliers and are often seen engaging in spectacular aerial chases.

Arctic skuas breed on coastal moorlands and islands in the UK, particularly in Scotland, including the Shetland and Orkney Islands, and occasionally in northern mainland Scotland. After the breeding season, they migrate to the southern hemisphere, wintering at sea in the subtropical and tropical oceans. The UK population is relatively small and has been declining with an estimated 1,200 to 1,500 breeding pairs, varying annually based on breeding success and environmental conditions.

In Norfolk they are typically seen during their migration rather than as breeding residents. They flew straight through.

Knot dunlin godwit
Arctic skua
Arctic skua
Arctic skua
Arctic skua
Arctic skua

We were able to pick out a few little stints and the same number of curlew sandpipers. The curlew sandpiper is another notable bird species that can be observed at Snettisham. In breeding plumage, it has rich chestnut-red underparts and mottled grey and brown upperparts. In non-breeding plumage it is pale grey above and white below, with a white rump and supercilium (eyebrow line). It is also a long-distance migrant, breeding in the Arctic and wintering in Africa, Asia, and Australia. They are typically seen in the UK during their migration periods. High tide is an optimal time to see them as they gather with the other waders at roosting sites.

The tide was advancing and some of the waders were getting closer - we'd all lost the semipalmated sandpiper.

Curlew sandpiper
Curlew sandpiper

The tide was flushing many of the knot, godwits, dunlin, oystercatchers and others from the bay, many flying over us and into the freshmarsh lagoon behind - a great spectacle. We decided to walk along to a hide where you could watch the assembled waders congregating on small islands. Spotted redshanks hung out with some cormorants. A Mediterranean gull and several sandwich terns roosted with assorted gulls on the island directly in front.

Mediterranean gull
Sandwich tern

There was an update from South Screen that a white-rumped sandpiper had been found and so we quickly set off and found the hide already full of birders, packed in like sardines. Fortunately, we are all slim (haha), and soon all four of us had managed to squeeze in and had eyes on the bird. Initially it was asleep, popping its head out sporadically - eventually a tern dropped in beside moving it right and giving us a better view - even a wing-stretch.

The white-rumped sandpiper is a small shorebird from North America that occasionally appears as a rare but regular vagrant in the UK. In breeding plumage, it has a greyish-brown back with black streaks, a white rump (hence the name), and a distinctive white stripe over the eye. In non-breeding plumage, it is more uniformly greyish with less distinct markings. The white rump, usually visible in flight, is a key distinguishing feature. It also has a relatively long primary projection beyond the tail, giving it a pointed-winged appearance.

White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper
White-rumped sandpiper

The white-rumped sandpiper was roosting with numbers of dunlin and knot; a spoonbill and domestic white goose were on the slope behind.

Red knots are migratory birds, passing through the UK during their journeys between their Arctic breeding grounds and wintering areas in West Africa; some also spend the winter in the UK. In breeding plumage, they have striking reddish-orange underparts and mottled gray and brown upperparts. In non-breeding plumage, they are more uniformly grey above and white below. They are known for their spectacular flocks, often seen in large numbers, especially during high tide roosts at Snettisham.

The best time to observe them is during high tide when they gather in large flocks on the mudflats and beaches; the sight of thousands of birds in flight is a remarkable spectacle.

Knot dunlin

We spotted another curlew sandpiper in the flock and continued scanning to see if we could add anything else, but then retired to the sea wall and a couple of benches for a coffee and lunch break.

Waders
Waders

While we still scanned the birds, picking out another little stint, we worked our way back along the sea wall and towards the car. We stopped on several occasions still daunted by the number of birds in view - I have never seen so many little terns in one place, Adrian Borley @AdrianBorley reporting a personal count of a minimum 357 a couple of days later ...

Little tern appear to have had a successful breeding season in Norfolk, particularly at Snettisham. Snettisham is part of the Wash, a large estuarine system that is crucial for many bird species. The successful breeding of little terns here highlights the importance of maintaining and protecting such habitats. This success is significant given the challenges faced by this species.

Reports indicate an increase in the number of nesting pairs at Snettisham with measures leading to a higher survival rate of chicks. Despite the successful season, little terns continue to face threats such as habitat loss, climate change, and disturbance; continued efforts are still needed.

Little tern

We had a great visit, but everyone was starting to feel weary and we elected to stop at the cafe at the entrance to the reserve for a drink and freshen up before the journey home - never stopped there before and well worth remembering it is there.

Year list: 224.