White Winged Black Tern .
Underwing shot of White Winged Black Tern .
I met up with Martyn , Chidders , Marc and Adam along the Lampen wall overlooking the main lake where the 2 Terns put on an amazing display for us all flying directly over head at times , whilst we were watching the main attraction Marc Heath picked out a Sandwich Tern which is a real rarity in the Valley , there were several Common Terns nearby plus a good number of Hobbies zipping about , i watched these birds for approx an hour when Martyn , Chidders and Adam went off towards the Water meadows and i had loads to do at home , so a really enjoyable session with great company .