Christopher Helm’s lifelong interest in birds prompted him to found the famous Helm Identification Guides, a byword among birders for authority and accuracy.
Ornithologists quickly recognised the Helm Identification Guides as essential reference books, for their detailed accounts of bird species, focus on the most important identification features, and up-to-date information on distribution and population size. Among the most sought after bird books, each Helm Identification Guide guide is packed with photographs and plates.
Publisher: Christopher Helm
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