Went to see the Great Northern Diver on Friday,got there at 3-00pm and saw Rob Adderley at the site.After watching the diver for a while it became apparent to me that there were 2 birds(I did not know there were 2!) Rob was busy photographing the birds,when he had done,he told me about the Yellow Legged Gull in the roost.We then walked around to the "middle" area at Audenshaw and Rob kindly put me onto the gull.So this post is a thankyou to Rob!