Rarity Round-up, 16th to 22nd February 2019

The spring-like weather continued, remaining dry, with southerly winds again bringing warm air up from well beyond south-west Europe and local temperatures hitting a balmy 15°C on 21st and 22nd. Notable birds during the period were a likely Glossy Ibis and a new Cattle Egret, while nearly all of last week’s scarce winter visitors remained in place.

At Thrapston GP, the first-winter Whooper Swan and the three Pink-footed Geese were still present throughout and the two Pinkfeet, mobile around Stanford Res and nearby Stanford Hall, remained all week. Surprisingly, there were no Red-crested Pochards reported from Pitsford Res and the only ones on show were three on Mary’s Lake, at Earls Barton GP, until at least 21st while, across the lane at Summer Leys, the itinerant drake Ring-necked Duck was seen again for one day only, on 16th. The other drake, at Pitsford, went unreported this week for the first time since its arrival in late November last year.

However, at least one juvenile Great Northern Diver remained at Pitsford throughout but Great Egrets were limited there to just two on 19th. Of the other regular sites for this species, Thrapston and Summer Leys scored joint highest with five on 20th and 22nd respectively, while singles were at Cransley Res, Ditchford GP/Irthlingborough Lakes & Meadows, Ravensthorpe Res and Stanford Res. Not entirely unexpected in these days of Bubulcus aplenty was the second Cattle Egret of 2019, discovered ‘somewhere in the Nene Valley’ on 21st, the location being withheld to avoid disturbance in a sensitive area. Odds on there will be quite a few more discovered as we move deeper into 2019.

Cattle Egret, Northamptonshire Nene Valley (location withheld), 21st February 2019 (Linda Summerfield)
Cattle Egret, Northamptonshire Nene Valley (location withheld), 21st February 2019 (Linda Summerfield)
Cattle Egret, Northamptonshire Nene Valley (location withheld), 21st February 2019 (Linda Summerfield)

Intriguing bird of the week award, however, goes to the ibis sp., which was seen from the window of a moving car, as it flew south between Moulton and Overstone on the morning of 16th. Although the observer exercised caution and refrained from going all out glossy, it appears unlikely to have been anything else – particularly with ‘new’ Glossy Ibises turning up this week in Cambridgeshire, Norfolk, Suffolk and Worcestershire.

Meanwhile, both of last week’s Hen Harriers continued to be seen – the Stanford Res individual until 18th and the one at Neville’s Lodge until 21st, while Stanford also featured a Merlin on 16th, as did Blueberry Farm on the same date.

Juvenile female Hen Harrier, Stanford Res, 18th February 2019 (Chris Hubbard)
Juvenile female Hen Harrier, Neville’s Lodge, Finedon, 21st February 2019 (Martin Swannell)
Juvenile female Hen Harrier, Neville’s Lodge, Finedon, 21st February 2019 (Ricky Sinfield)

Hollowell Res again produced the only notable wader of the week – this time a Jack Snipe on 16th. Two days later, on 18th, single adult Mediterranean Gulls appeared in the roosts at Boddington Res (and again there on 22nd) and Stanford Res and a first-winter Iceland Gull made a sortie over the dam at the latter site, before disappearing, on 16th. The only other scarce gulls – an adult Yellow-legged Gull and a second-winter Caspian Gull – were also seen on 16th, again at Hollowell Res.

Adult Mediterranean Gull, Boddington Res, 22nd February 2019 (Mike Alibone)

Just one Short-eared Owl was to be found around Neville’s Lodge, just prior to dusk, on 16 and 17th, while the Great Grey Shrike became more elusive but continued to be seen

Great Grey Shrike, Blueberry Farm area, 17th February 2019 (Martin Swannell)
Great Grey Shrike, Blueberry Farm area, 17th February 2019 (Martin Swannell)

throughout the period near to Blueberry Farm, where only one Corn Bunting was reported on 19th.

Female Crossbill, Irchester CP, 21st February 2019 (Alan Coles)

Again this week, up to eight Crossbills were present almost daily at Irchester CP until at least 21st.

Rarity Round-up, 9th to 15th February 2019

After the first two days, Storm Erik’s wind and rain ultimately gave way to southerly winds bringing warm air to the country from as far south as the Azores. The resultant ‘warm’ conditions were positively spring-like, with temperatures hitting a local daytime high of 14ºC. Some movement took place on the wader front, with Oystercatchers returning to three Nene Valley sites and an Avocet appearing at Hollowell Reservoir.

At Thrapston GP, the first-winter Whooper Swan remained on Town Lake but in terms of species, this week’s goose count was down a little with three Pink-footed Geese still ranging widely over the Thrapston GP complex, while two continued to visit Stanford Res on and off, commuting with Greylags from land adjacent to nearby Stanford Hall.

Numbers of Red-crested Pochards remained low, with a maximum of nine at Pitsford Res on 13th and again, they were not recorded elsewhere, while the drake Ring-necked Duck there continued to perform well in Pintail Bay, often allowing close approach. Once again, the other drake in the Nene Valley, after putting in a brief appearance on Earls Barton GP’s Mary’s Lake on 5th, resurfaced nearby on the main lake at Grendon on 12th. Yes, it’s still down there … somewhere in the valley.

Ring-necked Duck, Pitsford Res, 9th February 2019 (James Timms)
Ring-necked Duck, Pitsford Res, 9th February 2019 (James Timms)
Ring-necked Duck, Pitsford Res, 12th February 2019 (Alan Coles)

Meanwhile, the two juvenile Great Northern Divers remained at Pitsford all week, occasionally showing well together, some distance south of the causeway. Great Egrets were a little down on last week and although Thrapston continued to hold four or five and Earls Barton GP/Summer Leys two or three, elsewhere the picture was different, with only singles at Cransley Res, Ditchford GP/Irthlingborough Lakes & Meadows, Pitsford Res and Stanford Res.

Juvenile Great Northern Divers, Pitsford Res, 10th February 2019 (Jon Cook)
Juvenile Great Northern Diver, Pitsford Res, 10th February 2019 (Jon Cook)

The juvenile Hen Harrier at Stanford Res remained for the duration and continued to show fairly frequently and the Neville’s Lodge ‘ringtail’ showed prior to dusk on 9th, 12th, 13th and 15th, also visiting Summer Leys on 10th, where photographs taken enabled it to be identified as a juvenile female. In contrast to last week, just one Merlin in the vicinity of Blueberry Farm on 13th was more this species’ usual form.

Juvenile female Hen Harrier, Summer Leys LNR, 10th February 2019 (Aamir Mughal)
Juvenile female Hen Harrier, Neville’s Lodge, Finedon, 13th February Martin Swannell)
Juvenile female Hen Harrier, Neville’s Lodge, Finedon, 13th February Martin Swannell)

So, wader of the week, then – in fact the only wader of the week – was the Avocet which visited Hollowell Res on 14th. Still quite scarce in Northants, hopefully this early migrant will be the first of more to come this spring. Scarce gulls were again few and far between, being represented by an adult Mediterranean Gull in the roost at Boddington Res on 14th, an adult Yellow-legged Gull at Daventry CP on 11th and 13th and an adult Caspian Gull at Pitsford Res on 9th plus a first-winter and a second-winter together at Hollowell Res on 15th.

Short-eared Owl, Neville’s Lodge, Finedon, 11th February (Ricky Sinfield)

A Short-eared Owl was found at Harrington AF on 10th, while three were around Neville’s Lodge just prior to dusk on 11th and at least one was there the following evening. Close to the latter site, a Siberian Chiffchaff was at Stanwick GP on 10th, having been first glimpsed there about three weeks ago while, having entered its fourth week,

Siberian Chiffchaff, Stanwick GP, 10th February 2019 (Tom Green)
Siberian Chiffchaff, Stanwick GP, 10th February 2019 (Tom Green)

the Great Grey Shrike continued to be seen throughout the period near to Blueberry Farm, where the Corn Bunting count reached a heady four on 14th. There was a further unconfirmed report of a Great Grey Shrike at the feeder stream end of Hollowell Res on 15th.

Male Crossbill, Irchester CP, 13th February 2019 (Doug Goddard)
Female Crossbill, Irchester CP, 13th February 2019 (Doug Goddard)
Crossbills, Irchester CP, 13th February 2019 (Doug Goddard)

However, setting themselves up as a popular draw, up to eight Crossbills were present almost daily at Irchester CP from 9th. Although it has bred locally in the past, this species is an irregular visitor to the county, normally occurring as a result of late summer and autumn irruptions.

Rarity Round-up, 2nd to 8th February 2019

Frozen conditions continued for the first two days of the period, with continuing cold northerlies and temperatures bottoming out at -5ºC early on 3rd. After this it was all change, the winds swung round to the westerly quarter and daytime temperatures rose to 9ºC, rapidly melting ice and remnant snow. By the week’s end, Storm Erik’s gale-force winds and rain put the dampeners on things across the Midlands but none of this, it seems, made any significant difference to the birds on offer.
Cransley Reservoir, 2nd February 2019 (Mike Alibone)

Reported missing, presumed gone, the first-winter Whooper Swan at Thrapston GP evidently relocated to Town Lake, being seen there on 4th-5th, following five flying south over Stanford Res on 2nd. Thrapston’s goose flock, meanwhile, became fragmented and the White-fronted Goose was seen only on 2nd and 7th, while the three Pink-footed Geese were still present on 5th, with at least one remaining until 7th. Stanford’s two pinkfeet were also seen, on and off, until the same date.

Pink-footed Goose, Stanford Res, 3rd February 2019 (Chris Hubbard)

Numbers of Red-crested Pochards appeared to fall to a maximum of just 6 at Pitsford Res on 2nd and they were not recorded elsewhere, while Pitsford’s drake Ring-necked Duck now seemingly settled around Pintail Bay, remained all week. On 5th, another drake was reported from Mary’s Lake at Earls Barton GP, although it hasn’t been seen since. Is there still one mobile about the Nene Valley, currently lurking at a locality unknown?

Ring-necked Duck, Pitsford Res, 3rd February 2019 (Angus Molyneux)

Back at Thrapston, a handsome drake Smew – outrageously scarce in the county this winter – put in a brief appearance on 3rd, but was gone by the following day, while the two juvenile Great Northern Divers remained at Pitsford all week.

Smew, Thrapston GP, 3rd February 2019 (Adrian Borley)

The Bittern found on Thrapston’s Aldwincle Lake on 1st was still being watched along the reedy margin of the lake’s northern end on 2nd and 3rd, while the site, along with Pitsford Res, continued to hold the highest number of Great Egrets – up to four – throughout the week. Elsewhere, Earls Barton GP/Summer Leys LNR again hosted three, Stanford Res held two and singles were at Ditchford GP, Hollowell Res, Ravensthorpe Res, Thorpe Malsor Res and in flight over Blueberry Farm (Maidwell).

Great Egrets, Pitsford Res, 2nd February 2019 (Richard How)

The juvenile Hen Harrier at Stanford Res remained for the duration but the Neville’s Lodge ‘ringtail’ proved anything but reliable in its appearances, being seen there only on 2nd and 3rd. A three Merlin week is unusual but that’s just what we got, with the one in the vicinity of Blueberry Farm being seen on four dates and further singles at Chipping Warden on 3rd and near Easton Maudit on 6th-7th.

Hen Harrier, Stanford Res, 6th February 2019 (Matt Jackson)

A single Jack Snipe at Desborough AF on 4th just managed to keep waders on the radar this week Pitsford Res on 28th. Gull numbers continued to run at a low ebb, with Hollowell Res producing an adult Yellow-legged Gull and a second-winter Caspian Gull on 2nd, while the Boddington Res roost was visited briefly by an adult and a third-winter Caspian Gull on 4th and a second-winter Glaucous Gull appeared at Stanford Res on 5th.

Two Short-eared Owls were seen around Neville’s Lodge during the late afternoons of 3rd, 4th and 6th and the Great Grey Shrike continued to perform throughout the week, close to Blueberry Farm, where at least two Corn Buntings remained in the seed crop at the same site.

A steppe in the wrong direction?

The Long Buckby Lanius and its capricious taxonomic history

On 3rd November 1997, Nick Roberts was driving between Long Buckby and West Haddon when he came across a shrike on a roadside fence post. The bird quickly dropped to the ground, where it remained for a short period. It was still there a few minutes later when Nick returned with Peter Spokes and together they watched it, subsequently identifying it as a Steppe Grey Shrike.

First-winter Steppe Grey Shrike, Long Buckby, November 1997 (Graham Soden). This bird spent a considerable amount of its time feeding on the ground, ‘hopping around’ like a wheatear. As a consequence, its bill, legs and underparts frequently became stained with soil.

Local birders were duly notified and many arrived the same day to see it. It remained in the vicinity the following day, by which time it had attracted a growing number of observers, many of whom had travelled from different parts of the UK.

The record was submitted to, and accepted by, the British Birds Rarities Committee as the 12th for Britain. There have been fourteen subsequent accepted British records.

First-winter Steppe Grey Shrike, Long Buckby, November 1997 (Graham Soden).

Back in the day, Steppe Grey Shrike was almost whatever you wanted it to be, depending on your choice of taxonomic authority – floating around between being races of Great Grey Shrike, the more recently split (from Great Grey Shrike) Southern Grey Shrike complex, and a full species in its own right. At the time of record acceptance in Northamptonshire it had already been lumped with Southern Grey Shrike (e.g. *Clements 2017) and so constituted a ‘first’ for the county.

However, it was generally recognised as a full species by several authorities (King 1997, Hernández et al. 2004, Panov 2011 – cited by the International Ornithological Congress (IOC)) and has remained as such until this year, being on the IOC World List, which is now followed by the UK in defining what is on (or off) the British list. Unfortunately, because there has never been a true consensus on the definitive taxonomy of this species, last month, the IOC decided to (re)lump Steppe Grey Shrike with Great Grey (see here) ‘pending’, as they say ‘full resolution of this complex.’

It would seem to make better sense to leave it in full species status until the evidence to lump it with Great Grey Shrike is available and undisputed – and in this respect, surely this is a step in the wrong direction.

The above move by the IOC will no doubt prove unpopular – not only with us in Northants but also across the UK as a species is effectively dropped from the British list.

*Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017.
References cited above by the IOC
Hernández, MA, F Campos, F Gutiérrez-Corchero & A Amezcua. 2004.  Identification  of Lanius species and subspecies using tandem repeats in the mitochondrial DNA  control region. Ibis 146:227-230
King BF. 1997. Checklist of the Birds of Eurasia Ibis Publishing Company. Vista, CA.
Panov E. 2011. The true shrikes (Laniidae) of the world. Ecology, Behavior and Evolution. Pensoft Publ.

An exciting new addition to the Northamptonshire List

Completing the latest duck race, Falcated Duck makes it over the line … after a third of a century.

It has only taken 33 years but the drake Falcated Duck, which first arrived with Wigeon at Welney in Norfolk in December 1986, before relocating to Pitsford Res in February 1987, has just been accepted by the British Onithologists’ Union as the latest addition to the British List.Found by Dave Burges and Matthew Rodgers on 15th February 1987, it remained at Pitsford until 5th April and the record was duly submitted to, and accepted by, the British Birds Rarities Committee. It reappeared the following winter, when it turned up at Thrapston GP on 12th December, remaining there until 24th, before relocating to nearby Ringstead GP, from where it commuted to and from Thrapston between 16th January and 6th March.

Falcated Duck, Martin Mere, September 2014 (Francis C Franklin/Wikimedia Commons). Captive for illustration only.

Prior to the return to Northants it was present again at Welney during the autumn. An image of the bird appeared in British Birds 80: 255.

Falcated Duck breeds in eastern Siberia and has wandered to Pacific coast USA, south-west Asia, the Middle East and Europe, where occurrences have often been dismissed as escapes. Its population is currently thought to be 78,000-89,000 individuals.

Rarity Round-up, 26th January to 1st February 2019

Apart from rain on 29th and some short-lived, light to moderate snow on 1st, this week’s weather remained dry and mainly bright, with temperatures of -6ºC overnight on 30th/31st delivering the coldest night of the season, so far. Many bodies of water froze over, or at least became frozen in part, as a result. Winds varied between north-westerly and south-westerly, swinging easterly to north-easterly during the last two days of the period.

At the eastern end of the Nene Valley, Thrapston GP featured well this week. Along with the long-staying first-winter Whooper Swan came a generous gaggle of winter geese, with the Greylag flock holding a single White-fronted Goose and three Pink-footed Geese, during the last two days of the period.

Adult Pink-footed Goose, Thrapston GP, 1st February 2019 (Mike Alibone)
Adult Pink-footed Geese, Thrapston GP, 1st February 2019 (Mike Alibone)
First-winter Pink-footed Goose, Thrapston GP, 1st February 2019 (Mike Alibone)

Most of last week’s scarce wildfowl remained in place, with up to twenty-three Red-crested Pochards again present at Pitsford Res and two still at Ditchford GP on 31st. Pitsford’s drake Ring-necked Duck spent an increasing amount of time in Pintail Bay this week and a first-winter Scaup put in an appearance there on 26th, while the two juvenile Great Northern Divers remained on site at the until at least 29th.

Drake Ring-necked Duck, Pitsford Res, 24th January 2019 (Beth Clyne)
Drake Ring-necked Duck, Pitsford Res, 31st January 2019 (Rod Baker)
Drake Ring-necked Duck, Pitsford Res, 31st January 2019 (Rod Baker)

Back to Thrapston, where a Bittern was found on Aldwincle Lake on 1st and late news emerged of a Cattle Egret roosting among the Little Egrets on Town Lake in early January. However, it appears to have been a one-night stand and hasn’t been seen since. Thrapston also found itself in competition with Pitsford, bidding to hold the highest number of Great Egrets during the week by increasing its standing total from five to six on 27th. Pitsford scored an equaliser with its own six, four days later, on 31st. Elsewhere, Earls Barton GP/Summer Leys LNR hosted three, Ditchford GP held two and singles were at Ravensthorpe Res and Stanford Res.

Hen Harriers were still in evidence, the Stanford Res juvenile was seen on 27th, while last week’s ‘ringtail’ at Neville’s Lodge, Finedon, was seen on 26th, 27th and 28th and a new bird – a ‘ringtail’ was found near Blueberry Farm, Maidwell on 1st. Once again, the only other raptors of note occurring were the male Merlin seen again in the vicinity of Blueberry Farm on 30th and another near Ravensthorpe Res on 1st.

Like last week, notable waders were restricted to Jack Snipe duos at Barnes Meadow LNR (Northampton) on 26th and Pitsford Res on 28th. Gull numbers, too, were significantly down, with Pitsford producing single Yellow-legged Gulls – an adult on 26th and a third-winter on 27th, followed by a momentary upturn in quality in the shape of a juvenile Glaucous Gull, briefly, on 28th.

Up to three Short-eared Owls continued to be seen around Neville’s Lodge, near Finedon, throughout the week, while reports of Waxwings included six at Staverton on 26th and one at The Plens NR, in Desborough, briefly on 30th. Nailing one down locally this winter has, so far, been well nigh impossible.

It’s been a different story, though, with the highly obliging Great Grey Shrike, which continued to wow visitors throughout the week, close to Blueberry Farm, Maidwell, and up to four Corn Buntings were still present in the seed crop at the same site. Unfortunately, there was no further sign of last week’s Lapland Bunting but the week produced another Nordic Jackdaw – this time at Stanwick GP on 29th