Oes na wylwyr adar yma? Oes unrhywun gwbod am 'app' sy'n fel 'tick-list' o fatha adar ti wedi sbotio (nid jyst app ID)?
🦉 #GwylioAdar

Are there any 'twitchers' here? Does anyone know of an app that's like a tick-list of birds you've spotted (not just an ID app)?
🦉 #BirdSpotting