I heard a cuckoo near to where I live in SW France on 24th March and heard a hoopoe calling every day from the 25th. We saw cuckoos and hoopoes in the following days, but no swallows or martins even though the bats had come out of hibernation. Then we came down to Spain last Friday and there were a few swallows and swifts about, more each passing day. The other day I heard a single nightingale and by yesterday there were dozens singing. It has been a strange year for bird migration.