On her morning dog walk around Abermawr woods and beach, my partner Fran, has been hearing and seeing Chiff Chaffs for over a week now. As she is not too confident on birdsong, she uses the Merlin app on her phone. This morning it identified American Robin and Red Legged Partridge whilst having difficulty with singing Song Thrush.
American Robin would be something of a miracle, although Red Legged Partridge is unlikely but vaguely possible i suppose. It also recorded Black Cap unnoticed by Fran but with migrants or even overwintering Black Caps its not so unlikely. But heres the rub, can you depend on accuracy given the previous anomalies?