Swallows are traditionally a sign of summer, but they arrive well before summer does, with the earliest seen in late March.
When swallows first return to the UK, they are constantly on the wing, hunting for insects and even drinking by swooping down over water and snatching a beakful.
Your best chance of seeing a swallow really clearly is in September, when they sit together on telephone wires preparing to migrate back to Africa. When they sit still, you can see their red throats.
The longer a male swallow's tail streamers, the more chance he has of mating!
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