Mammals of Colorado, Second Edition

Mammals of Colorado, Second Edition

James P. Fitzgerald

Language: English

Pages: 704

ISBN: 1607320479

Format: PDF / Kindle (mobi) / ePub

Thoroughly revised and updated, Mammals of Colorado, Second Edition is a comprehensive reference on the nine orders and 128 species of Colorado's recent native fauna, detailing each species' description, habitat, distribution, population ecology, diet and foraging, predators and parasites, behavior, reproduction and development, and population status.

An introductory chapter on Colorado's environments, a discussion of the development of the fauna over geologic time, and a brief history of human knowledge of Coloradan mammals provide ecological and evolutionary context. The most recent records of the state's diverse species, rich illustrations (including detailed maps, skull drawings, and photographs), and an extensive bibliography make this book a must-have reference.

Amateur and professional naturalists, students, vertebrate biologists, and ecologists as well as those involved in conservation and wildlife management in Colorado will find value in this comprehensive volume. Co-published with the Denver Museum of Nature & Science

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Arapahoe County, capture rates of amphibians and reptiles were similar on and off prairie dog colonies (Shipley et al. 2008). Bevers et al. (1997) modeled black-tailed prairie dog colonies at the landscape level to optimize habitat for blackfooted ferret recovery. Kinlaw (1999) provided a general review of the importance of burrowing mammals in arid environments. Prairie dogs feed badgers (Licht 2009), coyotes, blackfooted ferrets, and ferruginous hawks (Buteo regalis) and other raptors, and

processes and interactions among individuals are then possible. Our own species may represent the zenith of these capacities. A number of characteristics are unique to mammals, among them hair, sebaceous and sweat glands, mammary glands, a single bone in the lower jaw articulating with a single bone of the skull, three middle ear ossicles, a single left aortic arch, non-nucleated biconcave red blood cells, a muscular diaphragm separating the thoracic and abdominal cavities, and a highly developed

cerebral cortex. These characteristics did not arise from nothing, of course; they have antecedents in structures of the “reptilian” ancestors of mammals. Modern mammals differ from other extant amniotes in numerous ways. Mammalian traits evolved at different rates over tens of millions of years. Given this mosaic pattern of evolution, to state just when the transition was made from “mammal-like reptile” to “reptile-like mammal” is somewhat arbitrary. To avoid undue rancor and speculation,

ants, bees, and wasps—appear to be at or near their evolutionary zenith in these times. So too are flowering plants, so perhaps the Cenozoic should be called the “Age of Angiosperms.” Better still, we might think of the Cenozoic as the “Age of Coevolution,” because all of those dominant groups— mammals, insects, flowering plants—have been involved in an evolutionary positive feedback system, the success of each group building on the success of the others. And we humans are a part of that story,

chipmunks, the species is not active aboveground during winter but probably does arouse periodically to eat. Activity peaks during early morning and late afternoon (Cary 1911). Colorado chipmunks are monoestrous with a 30- to 33-day gestation period. Most breeding occurs in April or May. A single litter of about 5 young is born, furless except for vibrissae. Young are weaned at 6 to 7 weeks of age (D. Armstrong 1987). Neotamias rufus Hopi Chipmunk Description Map 8-6. Distribution of the

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