Yesterday morning the swallows were doing their aerial acrobatics over the water. As I came up to one of the dead English oak trees at the marsh edge, I spotted several of them lined up along the branches. They were all juveniles, who probably don't have the stamina of the adults yet, and needed to take a break. They are a mix of tree and bank swallows, the bank swallows being smaller with grey bands under their chins. Apparently by mid-July groups of juvenile swallows called creches tend to gather together.
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