A Practical Guide to Moult and Ageing

Every bird moults, and every birder sees the effects of this – be it in the shift from winter to summer plumage, or in the often more subtle change from immature to adult. Many birders will want to know the age of the bird they’re watching, but a lot of us lack sufficient knowledge to determine age or are side-tracked by incorrect assumptions. But, by learning a few basic rules, anyone can add an extra dimension to their birding and their understanding of birds by getting to grips with this...