In Bob and Annies post : Angle Bay this afternoon/early evening, Bob refers to " a dozen alba wagtails, including at least a few white wags." As Moticilla alba is the latin name for what we generally call White Wagtails, I and i guess others may be a bit confusedby this reference. As I know Bob is about as good as it gets in terms of Bird ID, I am a bit puzzled by this.. maybe I am just being a bit dull but it would be helpful if you might explain Bob!
