The Helm Guide to Bird Identification
“This book covers difficult identification issues by looking at tricky species pairs or groups of birds, and comparing and contrasting their respective features. Designed as a field companion, it supplements the standard field guides and provides much additional information. As well as detailed texts, the books include extensive illustrations of all relevant ages and plumages of the species concerned”.
“Anyone interested in honing their bird identification skills should read this book. It is not a recognition guide like the authoritative Collins Bird Guide or the very best Helm field guides. Instead, it connects the supposed “confusion species.” This makes it easier for the observer to recognise distinctions and enhance identification. Although both experts and beginners will benefit from this book, advanced beginners who want to sharpen their identification skills at home and in the field will value it most”