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The Peterson Field Guides (PFG) are a popular and influential series of American field guides intended to assist the layman in identification of birds, plants, insects and other natural phenomena. The series was created and edited by renowned ornithologist Roger Tory Peterson (1908–1996).
The Bode phase plot is the graph of the phase, commonly expressed in degrees, of the argument function ((=)) as a function of . The phase is plotted on the same logarithmic ω {\displaystyle \omega } -axis as the magnitude plot, but the value for the phase is plotted on a linear vertical axis.
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 ...
It is composed of 504 pages and contains accounts for 967 species of birds. The fifth edition involved the addition of thumb-tabs for general bird families such as hawks, sandpipers, warblers, etc. [4] The fifth addition also incorporates an accidental species list. This section includes 67 species that have occurred in North America fewer than ...
Plant identification is a determination of the identity of an unknown plant by comparison with previously collected specimens or with the aid of books or identification manuals. The process of identification connects the specimen with a published name. Once a plant specimen has been identified, its name and properties are known.
Bird ringing is the term used in the UK and in some other parts of Europe, while the term bird banding is more often used in the U.S. and Australia. [49] bird strike The impact of a bird or birds with an airplane in flight. [50] body down The layer of small, fluffy down feathers that lie underneath the outer contour feathers on a bird's body. [51]
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.
Published in 1980 by Rigby of Adelaide, South Australia, in its series of field guides to Australian natural history, the book is 190 mm high by 130 mm wide.It consists of three parts; Part One contains general information; Part Two contains separate keys to the identification of nests and eggs, as well as the colour plates that illustrate them; Part Three, comprising three-quarters of the ...