Despite the presence of another slow-moving low pressure system seemingly locked over the UK throughout the period, after last week’s relative lull, local birding bounced back with the discovery of a long overdue confirmed county ‘first’, as well as a uniquely flamboyant rarity, which chose not to hang around.
This week’s limited wildfowl action was confined to Summer Leys LNR with, once again, a lone drake Garganey on 18th and the continued presence of the Chiloe Wigeon x Crested Duck hybrid through to 21st.
Recognisable by missing wing feathers as the same individual, Summer Leys also saw the arrival, on 17th, of the Cattle Egret from Pitsford Res after it was last seen there on 15th. Its presence at this Nene Valley site was purely transitory, though, and it did not linger. Four Cattle Egrets were also in the favoured location of Stanwick GP on 16th.
On the raptor front, single Ospreys were seen at both Pitsford and Stanford Res on 17th, Hollowell Res on 19th and Thrapston GP on 20th, while a Marsh Harrier was at Polebrook AF on 15th.
In stark contrast to last week, this week’s notable waders were limited to just two species. Whimbrel numbers at Clifford Hill GP had dwindled to just one on 15th, while the following day saw the arrival of a Sanderling on the dam at Stanford Res, ahead of an impressive double-figure count of ten at DIRFT 3 on 21st.
The reputation of the latter site for attracting the scarce and the rare was further elevated this week with the discovery there of the first confirmed Baltic Gull for the county. Found on 16th and seen again on 18th, this second-summer individual was positively identified from the number of a black colour ring on its right tarsus as having been ringed as a pullus in Norway in August 2019 (see here).
Amazingly, an unringed adult, also showing characteristics of this (sub)species, was then found at DIRFT 3 on 19th, subsequently being seen over the Leicestershire border at Shawell, little more than 5 km to the north. In the absence of a ‘ring of provenance’, the field separation of this bird from dark, long-winged individuals of the intermedius race of Lesser Black-backed Gull is, at the moment, considered well nigh impossible.
We’ve had birds like this before in Northants – see here and here, for example – but in the absence of rings which can identify the individuals, one way or another, they are not acceptable at a national level. Hopefully, this week’s second-summer will enjoy a not too bumpy ride through the scrutineers of the British Birds Rarities Committee.
A first-summer Caspian Gull was also at DIRFT 3, on 15th and from 18th to 20th.
The second rare of the week was found at Croyland Park, in suburban Wellingborough, on 18th. Feeding on freshly mown grass, a magnificent Hoopoe was discovered early in the afternoon, went missing mid-afternoon and was then refound early in the evening. It was not present the following day.
Despite averaging just over one record every two years, there has been a series of blank years during the last thirty, the longest of which was six consecutive years, 1997-2002. How long will the wait for the next one be?