Swallow
Hirundo rustica
A distinctly long forked tail, cream underside and dark red throat and forehead.
Habitat: look for swallows in open grassland usually near water and houses.
Distribution: throughout the UK.
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Swallow (Amy Lewis/WTML)
Not to be confused with

Swift
Swifts are dark brown with scythe shaped wings. (northeastwildlife.co.uk)

House martin
House martins have a pure white underside. (blickwinkel/Alamy)

Sand martin
Sand martins have dark brown upper parts and a dark chest bar. (northeastwildlife.co.uk)