Common Crane apparently..
Although as far as I know nobody reported the sighting to anybody on the reserve, but via twitter and after that assorted rare bird news services, a Common Crane was reported on the reserve around 2pm. We did have a confirmed sighting on the 7th January so it's not impossible!
Confirmed sightings included 50 Jackdaw over the Mere early morning, 78 Ruff, 450 Black-headed Gulls.
Three Barn Owl out in the afternoon. Two Peregrine, 3 Common Buzzard, Kestrel and Sparrowhawk.