Download or read book Bicknell s Thrush written by George John Wallace and published by . This book was released on 1939 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bicknell s Thrush written by George John Wallace and published by . This book was released on 1939 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bicknell s Thrush its taxonomy distribution and life history A dissertation etc written by George John WALLACE and published by . This book was released on 1939 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bicknell s Thrush Its Taxonomy Distribution and Life History written by George John Wallace and published by . This book was released on 1939 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bicknell s Thrush written by D. G. Busby and published by . This book was released on 2004 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Bicknell's Thrush Catharus bicknelli was discovered in 1881 by Eugene Bicknell in New York's Catskill Mountains, but it was only named a distinct species in 1995."--p. [1].
Download or read book Bicknell s Thrush written by D. G. Busby and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Abstracts written by U.S. Fish and Wildlife Service and published by . This book was released on 1954 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution and Habitat Selection of Bicknell s Thrush catharus Bicknelli in the Catskill Mountains of New York State written by Cheryl Pierce-Berrin and published by . This book was released on 2001 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Wilson Bulletin written by and published by . This book was released on 1952 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Origin of Species Through Heteropatric Differentiation written by Kevin Winker and published by Univ of California Press. This book was released on 2010-11 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Differentiation and speciation without extended isolation appear to be common among migratory animals. Historical oversight of this is probably due to temporal distortion in distribution maps and a tendency to consider that lineages had different historical traits, such as being sedentary or much less mobile. Mobility among cyclic migrants makes population isolation difficult, and diminished levels of intraspecific differentiation occur in avian migrants (I term this "Montgomery's rule"). Nevertheless, many lineages have differentiated despite increased mobility and a high propensity for gene flow, conditions that speciation theory has not addressed adequately. Populations of seasonal migrants usually occur in allopatry and sympatry during a migratory cycle, and this distributional pattern (heteropatry) is the focus of a model empirically developed to explain differentiation in migratory lineages. Divergence arises through disruptive selection from resource competition and heterogeneously distributed cyclic resources. Heteropatric speciation is a type of ecological speciation in which reproductive isolation increases between populations as a byproduct of adaptation to different environments that enhances breeding allopatry and allochrony despite degrees of sympatry that occur during the nonbreeding period in migration cycles. Mating or pair bonding in nonbreeding areas is rare. Patterns such as leapfrog migration and limited morphological divergence suggest that differentiation is driven by these ecological factors rather than by sexual selection or nontemporal changes in the resource base itself, although the additional presence of either of the latter would have additive divergent effects. Migratory lineages provide a largely neglected series of natural experiments in speciation in which to test predictions stemming from this model and others focusing on ecological speciation --
Download or read book Wildlife Review written by and published by . This book was released on 1938 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ornithology in Laboratory and Field written by Olin Sewall Pettingill and published by Elsevier. This book was released on 2013-10-02 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ornithology in Laboratory and Field is intended as an aid to ornithological study at the college or university level. Students who lack the background knowledge usually acquired during a course in general zoology or biology should keep it handy for ready reference a standard elementary text on the subject. This book contains extensive material for purely informational reading, possibly enough to supplant the need of an additional textbook. Its principal purpose still complies with the title of its predecessors for it is essentially a manual to guide and assist the student in direct observations. All twenty sections, except the last (""The Origin, Evolution, and Decrease of Birds""), suggest methods and provide instructions for studies; and all conclude with an extensive list of references, frequently annotated, for further information. The twenty sections of the book can be taken up in almost any order and some may be omitted without affecting the instructional value of the others. A feature of this new edition is an introduction to birds and ornithology, intended for reading at the beginning of a course. The purpose is twofold: to show the significance of birds for study and to give an overall preview of ornithology, the subject, with emphasis on its wide scope, how it is studied, and some of the continuing and exciting opportunities that it offers for investigation.
Download or read book Thrushes written by Peter Clement and published by A&C Black. This book was released on 2010-08-30 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the 162 species of thrush, one of the most widespread and well-known families of birds in the world. This is the first book for almost a century solely devoted to thrushes, one of the most widespread and well-known bird families. It is a comprehensive treatment of the world's 162 species of true thrush and includes many of the most familiar garden species, as well as some of the rarest, most elusive and least known of all birds. This family also includes, as may be expected, some of the bird world's most accomplished songsters. Thrushes contains detailed information on identification and distribution, with a full description of each species, including reference to all recognised races, with emphasis given to vocalisations, which are often of key importance in determining speciation. Other sections deal with habitat and range, movements (many species are long-distance migrants), and breeding behaviour. For the first time, all species in the family Turdidae are illustrated in full colour, with a series of supplementary line drawings depicting particular aspects of shape or plumage. The 60 colour plates comprise approximately 540 images, illustrating adults, immatures, and most of the distinctive races. The plates are accompanied by colour maps showing the breeding and wintering range for each species. Thrushes is a wonderful addition to the award-winning Helm Identification Guide series, and will surely become the standard reference work to these birds.
Download or read book Urban Ornithology written by P. A. Buckley and published by Cornell University Press. This book was released on 2018-12-15 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urban Ornithology is the first quantitative historical analysis of any New York City natural area’s birdlife and spans the century and a half from 1872 to 2016. Only Manhattan’s Central and Brooklyn’s Prospect Parks have preliminary species lists, not revised since 1967, and the last book examining the birdlife of the entire New York City area is now more than fifty years old. This book updates the avifaunas of those two parks, the Bronx, and other New York City boroughs. It treats the 301 bird species known to have occurred within its study area—Van Cortlandt Park and the adjacent Northwest Bronx—plus 70 potential additions. Its 123 breeding species are tracked from 1872 and supplemented by quantitative breeding bird censuses from 1937 to 2015. Gains and losses of breeding species are discussed in light of an expanding New York City inexorably extinguishing unique habitats.
Download or read book Habits Food and Economic Status of the Band tailed Pigeon written by Edward Alphonso Goldman and published by . This book was released on 1958 with total page 1164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Audubon Illustrated Handbook of American Birds written by Edgar M. Reilly and published by . This book was released on 1968 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
