Today's walk along the river was notable for the huge numbers of corvids and pigeons in the air and feeding on the stubble fields. The birds were nervous and unsettled, partly (I guess) because of the pressure of having to be so close to other birds. Further along, near Hawkhead Estate Park, the birds were particularly unsettled, and the reason became clear when a Peregrine [163] appeared carrying a kill and calling loudly as it powered away. The local Crows, Jackdaws and Rooks were flying in all directions, not helped by the arrival on the scene of three Buzzards. The raptor theme continued a little later with a Sparrowhawk being harried by three crows over the tower. Other birds along the river included a Grey Heron, a Cormorant and 20 Mallards.