Among the usual birds in and around the garden today, two Ravens were unusual. The first sign was a Carrion Crow calling angrily. A few seconds later, first one Raven and then a second passed overhead, cronking quietly. Later, in Darnley, it was the turn of two angry Common Gulls to alert me to the presence of a flyover Buzzard. In between, at least one Swift was screaming over Hyndland.