This morning the frost had taken a hold of the site and thin ice was forming on most of the lagoons. There were large flocks of winter thrushes, Redwings, Fieldfares and Blackbirds. By the Gravel Pits there were two Cetti’s Warblers and the Slurry Lagoon held over 300 Teal with Black-headed Gulls and Lapwings. A Peregrine flew low across the bank in front of us, skimming the tops of the reeds, directly at the flocks of birds, which erupted into the air as one. In the confusion the Peregrine missed its mark and withdrew to the top of a pylon. PS.