Earlier in the year I saw a pair of Grey Wagtails several times around the old sandschool in Moore meadow when it had plenty of rainwater puddles.
Now it is dry it seems to attract Pied Wagtails.
I think this is probably a male Pied Wagtail. mostly black and white, and below is maybe a female with more grey on the back.
Caught a photo of Grey Wagtail by the Lilk stream a few weeks ago. Well camouflaged among the leaves at the waterside, but the egg-yellow colouring under the tail and grey back is clear.
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That's a delightful photo! Many thanks, David! I'm going to looking more carefully in future as I cross the Lilk.