Common Scoter, Sand Martins, Willow Warbler.
Cool, overcast & dull, very slight drizzle. A dark duck mid water proved to be a male Common Scoter on investigation. Quite a distance away from this bird was another bird which I first took to be a grebe, but was in fact a female Common Scoter. Odd that they were both present but so far apart. As I was scanning, 6 Sand Martins went low over the water, roughly NE.
I carried on and saw my first Swallow - hawking over the fields to the left of the road close to the Nature Reserve. It soon disappeared though. Just before the hide, a Willow Warbler was in full song at the top of a tree by the path. There was just a single female Goosander on the reserve. From the Pavilion cafe, the two Scoter had joined forces and were typically distant in the middle of the water. When I reached the bushy area just before Bib Knowl valley wall, another Willow Warbler sang. So it's definitely spring, though it doesn't feel like it.