24 species of bird seen, 3 more heard, 2 butterfly species on a 6 hour/9km walk (4.25 hours still) around north Monifieth and the Seven Arches (Balmossie) Viaduct area of the Dighty Burn on a warm (17C) bright and breezy Saturday. Surprise sand martin with house martins by A92? #ukwildlife
