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David Allen Sibley (born October 22, 1961, in Plattsburgh, New York) is an American ornithologist. He is the author and illustrator of The Sibley Guide to Birds , which rivals Roger Tory Peterson 's as the most comprehensive guides for North American ornithological field identification.
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 Sibley Guide to Birds by David Allen Sibley was published in 2000, and was widely regarded as setting a new standard for field guides in North America. The Collins Bird Guide by Peter J. Grant and Lars Svensson was first published in 2000, and was received extremely warmly by birders. It deals with the birds of the bulk of the Western ...
A Field Guide to the Birds of Hawaii and the Tropical Pacific; ... A Guide to the Birds of Mexico and Northern Central America; ... The Sibley Guide to Bird Life ...
The Trees of North America. For the purposes of this category, "North America" is defined in accordance with the World Geographical Scheme for Recording Plant Distributions (WGSRPD), which calls it Northern America, namely as one of the nine "botanical continents". It includes the following regions:
Austin T. Blakeslee Natural Area, Monroe County, Pennsylvania. The northern hardwood forest is a general type of North American forest ecosystem found over much of southeastern and south-central Canada, Ontario, and Quebec, extending south into the United States in northern New England, New York, and Pennsylvania, and west along the Great Lakes to Minnesota and western Ontario.
In terms of biodiversity, the only comparable temperate deciduous forest regions in the world are in central China, Japan, and in the Caucasus Mountains.Both the Appalachians (along with the neighbouring Appalachian mixed mesophytic forests ecoregion) and central China contain relict habitats of an ancient forest that was once widespread over the Northern Hemisphere.
PFG 11A: A Field Guide to Trees and Shrubs: Northeastern and North-Central United States and Southeastern and South-Central Canada (1958), by George A. Petrides. Second edition (1972): A Field Guide to Trees and Shrubs: Field Marks of All Trees, Shrubs, and Woody Vines That Grow Wild in the Northeastern and North-Central United States