Collins BTO Guide to Rare British Birds is the companion volume to the Collins BTO Guide to British Birds. It covers all the rare and scarce birds that have occurred in Britain and Ireland four times or more, as of February 2015. 'The Rarest of the Rare' section lists all the species that have occurred fewer than four times; taken in combination, this means that every species of wild bird that has ever occurred in Britain is mentioned.
Species descriptions comprise the bulk of Collins BTO Guide to Rare British Birds, and the text and photographs describe and illustrate the key features needed to identify these birds with confidence. Confusion species are included, as are vocalisation details for species whose identification it aids.
The photographs have been chosen carefully to show key features that are described in the accompanying text; they also give clues to the usual habitat favoured by the bird and its typical posture. Many of the photographs are seen here for the first time.
'ID Key Feature' pages provide a quick guide to a group of species or families; they describe the structural and behavioural features that an observer should concentrate on initially when they come across an unfamiliar bird. Where relevant, these feature pages also highlight identification pitfalls.
Unlike its companion volume, distribution maps are not included, as they are of little relevance when dealing with rare and scarce birds in Britain and Ireland: by their very nature, vagrant birds can turn up almost anywhere. However, where a part of Britain or Ireland is noteworthy for the occurrence of a given species, then the region in question is mentioned in the text.
Paul Sterry has written and illustrated more than 50 books, including the bestselling Collins Complete Guide to British Birds and Collins Complete Guide to British Trees. Trained as a zoologist, Paul has been a wildlife photographer for over 20 years and regularly undertakes research expeditions. He has worked as a Research Fellow at Sussex University studying freshwater ecology. Paul is a keen birder and conservationist.
"[...] All in all, this is an important addition to any birder’s library where its crisp design, expert summary of information and photographic expertise will prove invaluable for many years to come."
– Brett Westwood, BTO book reviews