North- west Norfolk trip for the Eastern Yellow Wagtail Alaskan Wagtail

On Saturday 28th December, I drove over to John H's at Hemsby and together with Tony S and Bob B, John drove us up to near Ringsfield so we could try for the Eastern Yellow Wagtail Alaskan Wagtail a new sub- species for the UK and a good bird to try and see. Arriving at john's at 7am, we went over to Acle and picked up Tony S and Bob B and within an hour a quarter we were approaching Docking then realising we needed to take the road between Ringsfield and Sedgeford, we turned and and off and along the country road we initially saw a load of cars parked on the left side of the road and a massive muck heap also on the left side of the road. The bird wasn't there sadly but was on view from a track to the right where we looked over a field and a kind birder enabled us all to look through his scope and see the excellent Eastern Yellow Alaskan Wagtail (EYWAW). It has been labelled Eastern Yellow Wagtail, Blue-headed Eastern Yellow Wagtail, Alaskan Yellow Wagtail, Tschutschensis Wagtail, a real mouthful! Anyway a great bird whatever it is called!It looked to me like what a blue- headed wagtail would look like in winter. Problem is the complete lack of literature on this type of bird. It was seen in the field and then flew south and was seen on the brow of the hill. It then flew further south and we walked 400 yards down the track to see 2 smaller Muck heaps on the right and the bird was initially seen between the 2 muck heaps in the company of a Pied Wagtail and then EYWAW flew away and perched in the top of some trees before returning and was on the ground in front of a large puddle then it returned to the left hand muck heap wandering around the left hand side before returning to the area between the muck heaps in grassy stems being then flying up to the left hand muck heap. An interesting bird it showed a grey head thick white square ended super cilia ending 2/3 of the way back along its head, darker black loves between the bill and eye, pale bill with a dark tip, grey brown mantle and white fringed dark flight feathers and dark slate grey legs log dark white edged tail which it constantly quivered as it walked about searching for food. It also had a distinctive, diagnostic sharp tshreep like a metallic "Richard's Pipit" type call. It had yellowy underparts with whitish throat. A super bird! Really difficult to photograph though as the light was abysmal and the distance involved from the bird, so I decided to gamble and lower the ISO to 1600 and hope the bird stayed still long enough to get a reasonable image I was quite pleased with the result! Next stop was just after the bridge, by Holkham fields a Buzzard seen perched. Heading to Wells and after 50 yards we parked on the left by the start of the footpath across the fields to Wells/ Holkham woods. Looking across 2 fields we had excellent views of a fine immature Rough- legged Buzzard perched on top of a bush by some huts. Also seen was a Buzzard perched on a post and a Grey Heron flew to a nearby dyke.