A long overdue visit to Staines Reservoirs near Heathrow Airport. I met up with Paul at Maple Lodge and we made our around the m25 towards Heathrow. Arriving at the reservoirs before 8am. A couple of regulars were already on site. A Caspian Gull had been seen yesterday (Saturday) so we enquired if it was still around. Unfortunately it had not been seen but by way of consolation there was an adult Yellow-legged Gull. Also on the slowly draining North Basin both Black-necked and Slavonian Grebe were seen distantly. A quick look into the sun on the South Basin and we immediately connected with the Great Northern Diver. A couple of hundred yards along the causeway and we had nice views of the drake Scaup. Other noteworthy birds seen on our shortish visit; Redshank, Shelduck, Common Gull, Great black-backed Gull, Goldeneye.