This morning, after a ringing session had been rained off, I went down to Linacre for a few hours, and spotted this bird swimming around the bottom reservoir, honking loudly.
At first glance, I thought it was a Canada Goose, and noted it down as such. After a few moments, however, I noticed it looked a little different, and grabbed a few photos. Looking closer, I'm now moving towards a hybrid Canada and Barnacle Goose. This isn't as far fetched as it seems, because there is a feral flock of Barnacle Geese at Carsington Water, and a mixed Canada and Barnacle Goose pair have bred and raised young at The Avenue Washlands in Chesterfield.
Other birds present today included 4 Great-crested Grebes (2 pairs; one on the middle reservoir, repairing last year's nest, and another pair on the top reservoir), Mallard (37), Tufted Duck (10), Black-headed Gull (31), Cormorant (2), Coot (11), Moorhen (3), Goosander (1 "redhead") and Grey Wagtail (2 together on the middle reservoir, with a little song).
The woods were quite quiet, but there were several Song Thrushes singing along with the Blue and Great Tits, and a Common Buzzard flew low over the trees being mobbed by the local Carrion Crows.