Yellow Wagtail (Motacilla flavia)
Some migrants are, of course, more predictable and Yellow Wagtails are one of those species that always turn up here on their way south. They are usually in flocks, the two batches I have seen this year have both been around the same size of forty or so birds.
They like rough pasture and cows. The cows eat the grass and and drop cow pats, the dung flies come along to lay their eggs in the pats and the Yellow Wagtails make the most of a last meal before setting out across the channel by eating up the flies!
We see less of the Yellow Wagtails in spring when they are heading north, they have other things on their mind then and are fully focused on breeding. Going back in the sutumn it is about building up strength and body mass to help them through the journey having put all of their energy into the breeding season.