Hooded Merganser....
It was a little busy with people at the local country park this afternoon, so any real noise and the bird flew away, now I know where they are, I will go again on sunday morning when its quiet.
Mike, the last three photos I can't see
When i went to edit post the picture was there so i had to remove all 3 and resubmit
Try taking some bird food,perhaps a box of attora shredded suet,the best thing about suet is if you wear rubber gloves (you dont want it on your camera) you can soften it and mold it into crevices ect.