Another highly productive day of local birding

SATURDAY 12 NOVEMBER (LGRE DIARY NOTES)

At first thing this morning, the Chiltern area was bathed in a blanket of dense fog. This has followed some intense rain overnight. Winds were once again in the SE, fairly light and warm. At around 0930 hours, the fog started to lift and giving way to bright periods.

It was another eventful day on the local birding front with some excellent birds being found. Before I had even left the house, Steve Heath had watched 4 Common Cranes fly NE over Southill, and whilst mapping out my route for the day, Roy Hargreaves did it for me by finding a DARK-BELLIED BRENT GOOSE.......

CHESS VALLEY, BOIS MILL (BUCKS)

A single LITTLE EGRET was present as I drove past

TRING RESERVOIRS (HERTFORDSHIRE)
(0945-1300 hours)

I parked up at Drayton Beauchamp bridge at 0945 hours and walked eastwards along the canal towpath. I could see the Brent almost immediately but obtained the best views after walking 250 yards along. The bird, a rather tired-looking juvenile DARK-BELLIED BRENT GOOSE, was feeding on the grass in the large field adjacent to Rushy Meadow, two fields north of the Dry Canal. It was less than 40 yards from Buckinghamshire! For some of the time, it stood up and fed, but in the main, sat down and munched voraciously on the blades of grass. It was very alert though, always keeping an eye on people, dogwalkers and the odd Common Buzzard flying over. It also got quite spooked when a Black-headed Gull landed next to it and snatched some grubs from the ground. With its indistinct off-white neckring, pale mantle and clear-cut wing-bars, it could easily be aged as a juvenile.

In the 90 minutes that I stood there watching it from the canal (and beckoning it over the border), just 6 birders came and went - RH, Chaz Jackson, Mike Campbell, Francis Buckle, Ian Williams and David Bilcock - Dave of course obtaining the two images published above. A welcome Herts Yeartick considering how many have passed through the London Area this past week.

The fields either side of the Dry Canal were surprisingly plentiful in farmland species, with a flock of 60 Fieldfare noted, 3 Mistle Thrush, 4 Bullfinch, 8 Yellowhammer, 25 Meadow Pipit, 9 Linnet, 30 Goldfinch and 27 Skylark. A Sparrowhawk also whizzed through.

A comprehensive check of WILSTONE RESERVOIR failed once again to yield any sign of Steve Blake's Thursday Twite. The rollcall included 30 Mute Swans, the 2 adult Whooper Swans, 65 Greylag Geese, 4 Gadwall, 238 Eurasian Wigeon, 90 Common Teal, 65 Shoveler and 92 Northern Pochard and highlighted in 5 NORTHERN PINTAILS (2 adult drakes, a first-winter drake and 2 females), a RED-CRESTED POCHARD, 5 female COMMON GOLDENEYE, 411 European Golden Plovers, a single DUNLIN, 2 Common Snipe and the wintering WATER PIPIT.

The neighbouring reservoirs were at the lowest water levels in decades, with Marsworth even now falling dramatically. TRINGFORD RESERVOIR held 2 Great Crested Grebes, 2 Mute Swans, several Teal and Shoveler and 28 Tufted Duck, whilst STARTOP'S END RESERVOIR produced 14 Great Crested Grebes, 4 Mute Swans, 14 Canada Geese, 5 Gadwall, 65 Teal, 15 Pochard, 11 Shoveler and 3 RED-CRESTED POCHARDS (1 adult drake, 1 adult female and a first-winter female).

MARSWORTH RESERVOIR added 4 Great Crested Grebes, a single Mute Swan, 27 Shoveler and 4 WATER RAILS feeding in the open on the mud; a Wren was in full song.

BROGBOROUGH LAKE (BEDFORDSHIRE)

Although frustratingly unbeknown to me I drove past a flock of 15 Pintail at Grovebury Pit (perhaps the largest county flock in over two decades), Brogborough Lake did not disappoint. Joining Bob Chalkley on the bank in front of the windsurfing centre at the east end, the two of us very quickly latched on to the 3 BLACK-NECKED GREBES found earlier by Neil Wright. They were in amongst a large raft of Coot. Somewhat surprisingly, they constituted the first in the county this year and represented my 188th county species of 2011. Initially, they were visible about half way down the lake but as a shooting party arrived on the north shore and started blasting Mallards on the water to death, virtually every bird on the lake became unsettled.

Minutes earlier, as I started to count the Coot flock, I was somewhat surprised to see a juvenile GREAT NORTHERN DIVER surface in my 'scope view - another first for the year. This bird proceeded to swim towards the east end of the pit, affording both Bob and I some excellent views. Unlike some individuals, it dived and surfaced after a relatively short space of time and was initially easy to keep on. Literally seconds before the shooting began, Lol Carman waltzed up and managed a couple of views in my 'scope but then we lost it for some time, BC eventually relocating it down the southern flank of the lake. It was then seen on and off throughout the afternoon and was still there when I left the site at 1445 hours.

After eventually finishing the Coot count (256 birds incidentally), I concentrated on counting the other wildfowl present on the lake, including 13 Great Crested Grebes, 117 Tufted Duck, 198 Northern Pochard, a pair of RED-CRESTED POCHARD and 9 COMMON GOLDENEYE (including 3 drakes).

BROOM (BEDFORDSHIRE)

Gypsy Lane Pits yielded 230 Greylag Geese and a single Barnacle Goose but it wasn't until I spoke with SCB that I realised that the geese I had driven over to see were not with them. In fact, the party of 10 EUROPEAN WHITE-FRONTED GEESE were sitting in the large grassy field immediately east of the G & M Growers site to the north of the main road. They comprised a family party of 2 adults and 8 juveniles - the largest single brood of White-fronts I have ever seen in the UK. The same field also harboured a covey of 10 GREY PARTRIDGES