Here are some of the Gull photo's taken on saturday before and after the Slaty Backed Gull put in it's brief appearance, The photo above and 2 below show what is believed to be a 3rd winter CaspianxHerring Hybrid, this bird is also wearing a green colour ring on its right leg, ring details are 70P3 a Polish ringed bird.
Photo above clearly shows the ring code details with the 3 photo's below of one of the 2nd winter birds present.
Photo's below show the 1st winter Caspian Gull present early morning on the area of earth which is flat and where a lot of Gull's loaf after feeding on in the tip face.
Photo below shows a Lesser BB Gull wearing a double ring combination with yellow colour ring, code E020 on the left leg and a yellow colour ring with an E code on the right leg. This is a colour ring code / combination I have not seen before.
The below photo shows a Herring Gull wearing a red colour ring on it's right leg with a code of FR7T, this is presumed to one of the codes used by the North Thames Gull ringing group.
Photo above shows the code in more detail and the photo below shows one of the rather smart looking Yellow Legged Gull's present.
