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A field mark is a characteristic (e.g. in plumage) useful for species identification, usually birds. They are often used in field guides or identification keys. In a broader context, a field mark might be referred to as a character (e.g. "differential character" or "diagnostic character"). For birds this may include plumage, flight ...
Second edition (1961): A Field Guide to Western Birds: Field Marks of All Species Found in North America West of the 100th Meridian, with a Section on the Birds of the Hawaiian Islands; Third edition (1990): A Field Guide to Western Birds: A Completely New Guide to Field Marks of All Species Found in North America West of the 100th Meridian and ...
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.
The number is reported to a central database so that information about the bird can be updated if the bird is ever recaptured somewhere else. Birds may also be marked with a locally unique combination of colored plastic leg bands, leg flags, patagial tags, or dyes which allow the bird to be recognized in the field without requiring recapture ...
A species plate from The Crossley ID Guide: Eastern Birds, illustrating different plumages of the red knot. 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).
National Geographic has also released a number of region-specific guides. Dunn and Alderfer helped National Geographic publish National Geographic Field Guide to the Birds of Eastern North America and National Geographic Field Guide to the Birds of Western North America in 2008. The organization also produced a number of state-specific guides.
Bird ringing is the term used in the UK and in some other parts of Europe and the world. Bird banding is the term used in the United States. Organised ringing efforts are called ringing or banding schemes, and the organisations that run them are ringing or banding authorities. Birds are ringed rather than rung. Those who ring or band birds are ...