The barn swallow has been seen in S.Devon since mid-March, but here in East Anglia they are later arriving, at least in significant numbers. There may have been the odd ones earlier this month.
Today April 23rd, I had my second view this year (first last week) and my first close-up view, close to the River Ouse in Ely. The return of swallows from S.Africa, crossing continents and deserts to reach here, lifts my spirits. Even more so when the swifts arrive in a few more weeks' time.
"All's well with the world" as Robert Browning said.
See http://www.rspb.org.uk/wildlife/birdguide/name/s/swallow/ . But numbers are declining.