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PFG 1: A Field Guide to the Birds (1934), by Roger Tory Peterson . Second edition (1939): A Field Guide to the Birds Third edition (1947): A Field Guide to the Birds Fourth edition (1980): A Field Guide to the Birds: A Completely New Guide to All the Birds of Eastern and Central North America
The Peterson Identification System is a practical method for the field identification of animals, plants and other natural phenomena. It was devised by ornithologist Roger Tory Peterson in 1934 for the first of his series of Field Guides [1] (See Peterson Field Guides.) Peterson devised his system "so that live birds could be identified readily ...
The Sibley Guide to Birds is a reference work and field guide for the birds found in the continental United States and Canada. It is written and illustrated by ornithologist David Allen Sibley. The book provides details on 810 species of birds, with information about identification, life history, vocalizations, and geographic distribution.
He developed the Peterson Identification System and is known for the clarity of both his illustrations of field guides and his delineation of relevant field marks. [14] [15] Paul R. Ehrlich, in The Birder's Handbook: A Field Guide to the Natural History of North American Birds (Ehrlich et al 1988), [16] said of Peterson:
It is effectively acts as a reference book, but not as a field guide due to its size. [9] In addition to the information in the regular field guides, this expansion contains family introductions, addition information in the species accounts, and in depth identification techniques for hard to identify species. [9] The second edition was released ...
A field guide is a book designed to help the reader identify wildlife (flora or fauna or funga) or other objects of natural occurrence (e.g. rocks and minerals). It is generally designed to be brought into the " field " or local area where such objects exist to help distinguish between similar objects. [ 1 ]
The Macmillan Field Guides to Bird Identification are two small bird field guides. Volume 1, The Macmillan Field Guide to Bird Identification , illustrated by Alan Harris and Laurel Tucker , with text by Keith Vinicombe , was originally published in 1989, covered British birds.
Typically, binoculars with a magnification of 8× to 10× are used, though many manufacturers produce models with 7× magnification for a wider field of view and increased depth of field. The other main consideration for birdwatching binoculars is the size of the objective that collects light.