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Mammals of North America: Second Edition / Edition 2
- ISBN-10:
- 0691140928
- ISBN-13:
- 9780691140926
- Pub. Date:
- 11/29/2009
- Publisher:
- Princeton University Press
- ISBN-10:
- 0691140928
- ISBN-13:
- 9780691140926
- Pub. Date:
- 11/29/2009
- Publisher:
- Princeton University Press
![Mammals of North America: Second Edition / Edition 2](http://img.images-bn.com/static/redesign/srcs/images/grey-box.png?v11.11.4)
Mammals of North America: Second Edition / Edition 2
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Overview
The best-selling field guide that "sets new standards" (New Scientist) and "makes all other field guides for mammals of the United States. . . and Canada obsolete" (Journal of Mammalogy) is now even better. Covering 20 species recognized since 2002 and including 13 new color plates, this fully revised edition of Mammals of North America illustrates all 462 known mammal species in the United States and Canada—each in beautiful color and accurate detail. With a more up-to-date species list than any other guide, improved facing-page descriptions, easier-to-read distribution maps, updated common and scientific names, and track and scat illustrations, this slim, light, and easy-to-use volume is the must-have source for identifying North American mammals.
Roland Kays and Don Wilson have scoured the technical literature to pull out the key differences between similar species, and illustrated these whenever possible, making the guide useful to amateur naturalists and professional zoologists alike. Casual animal watchers will appreciate the overview of mammal diversity and the tips on identifying animals they can spy in their binoculars, while scientists will appreciate the exacting detail needed to distinguish similar species, including illustrations of shrew teeth, bat toes, and whale dorsal fins.
- The best-illustrated and easiest-to-use field guide to North American mammals
- Beautiful and accurate color illustrations of all 462 mammals found in the United States and Canada—including 20 species recognized since 2002
- 112 color plates—including 13 new ones
- Key identification information—fully revised—on facing pages
- The most current taxonomy/species list
- Fully revised, easy-to-read range maps
- Illustrations of tracks, scat, and whale and dolphin dive sequences
Product Details
ISBN-13: | 9780691140926 |
---|---|
Publisher: | Princeton University Press |
Publication date: | 11/29/2009 |
Series: | Princeton Field Guides , #58 |
Edition description: | Second |
Pages: | 248 |
Sales rank: | 734,032 |
Product dimensions: | 5.00(w) x 7.90(h) x 0.60(d) |
About the Author
Read an Excerpt
MAMMALS OF NORTH AMERICA
By ROLAND W. KAYS DON E. WILSON
Princeton University Press
Copyright © 2009 Princeton University PressAll right reserved.
ISBN: 978-0-691-14278-4
Chapter One
Species IncludedThis field guide is designed to efficiently and accurately identify all 462 mammal species known from North America, north of Mexico. In addition to native species, this includes tropical species that rarely venture north across the border, exotic species introduced from foreign lands, and extinct species.
Some species on our list have very rarely been recorded in North America (e.g. Margay and Hairy-legged Vampire Bat), but deserve coverage in a field guide so that naturalists know what to look for in the event that these species recolonize.
Selecting which introduced mammal species to include in a field guide is a bit tricky. We selected only exotic mammal species known to survive and reproduce in the wild. This includes a number of ungulate and rodent species that could be confused with our native species. We decided not to include species such as the domestic horse or domestic cat, which have feral populations but are known to everyone, and unlikely to be confused with any native mammals. Because they are unlikely to be confused with native fauna, we did not include the various monkey species known to have escaped from zoos or breeding centers and that may survive in some areas in Florida, and perhaps Texas.
What Is a Species?
Scientists continue to refine our definition of the term species. Traditionally, we recognized independent evolutionary lineages that were reproductively isolated from other such lineages as species. This biological species concept is often difficult to apply in real life. Recent advances in molecular technology that allow much greater resolution of evolutionary relationships have led to a continuing re-examination of our ideas about what constitutes a species. For the purposes of this book, we have followed Wilson and Reeder (2005) in determining which species to recognize. In addition we have followed the more recent scientific literature and recognized a few additional species or name changes published subsequent to Wilson and Reeder (2005). So, for our purposes, a species is an evolutionary lineage of mammal that is recognized as distinct from other such lineages by appropriate authorities in the field of mammalogy.
What Information Is Included?
We designed this book to be useful both to amateur naturalists and professional mammalogists. We have packed as much detail into this volume as possible, but also worked hard to keep it concise and efficient, so that it is not unwieldy in the field. All the information for a given species is displayed on two facing pages.
- Artwork
The 110 color plates are the core of this guide and will be the most useful component for mammal identification. Each species is represented by an illustration, and some species have a number of illustrations to show variations in their appearance due to age, sex, season, or geographic variation. All paintings are original works of art created for this book and are the result of close collaboration between the artists and ourselves. Credits for each plate are listed on the copyright page.
- A Note on Skeletal Material
Most species can be identified based on external appearances. However, sometimes two species of mammal can be distinguished only by a dental or skeletal character. In these cases we include an illustration of such differences.
- Distribution Maps
The maps show the most recent geographic distribution data for each species. Data for these maps were provided by NatureServe in collaboration with Bruce Patterson, Wes Sechrest, Marcelo Tognelli, Gerardo Ceballos, The Nature Conservancy, Conservation International, World Wildlife Fund, and Environment Canada. Mammal ranges are dynamic, with some populations expanding into new areas and others becoming extirpated locally. Readers should therefore be on the lookout for species outside of their normal geographic range.
- Species Accounts
Each species account has a brief paragraph noting a species' common name, scientific name, measurements, and details about appearance, general ecology, and behavior. All species accounts are written with a specific formula to make it easy to find the bit of information you are looking for:
Common Name Genus species total length, tail length, weight (with differences for male and female where significant)
1) The single most important piece of information for identifying the species.
2) Description of the physical traits of the species. Details of within-species variation and how to tell it apart from similar species.
3) Description of behavior, where relevant, including vocalizations.
4) Description of habitats used by a species.
- Scat Illustrations
Mammals are often elusive, but their scat (feces) can be easy to find. This makes scat an excellent tool to document the presence of local mammals, and some mammalogists get quite excited over a good scat discovery. To aid in scat study, we have included examples of mammal scat shapes (see pages 236-239). While some species have very characteristic scats, others can be quite variable, with the shape and size dependent on the contents of the animal's last meal. Generally, herbivores have more consistent diet, and therefore their scat can be more reliably identified. Carnivores and omnivores have more variable diets, and therefore are much more difficult to identify by scat alone.
- Mammal Tracks
Most big or medium-sized mammals have characteristic footprints that can be detected and identified in soft mud or snow. We have provided illustrations of these tracks, with a range of measurements, on the inside flap of the cover of this guide.
What Information Is Not Included?
While this book has all the information you need to identify every mammal species in North America, it does not have much more. To keep this field guide efficient to use, small, and easy to take into the field, we have minimized discussion about the ecology, behavior, evolution, and conservation of each species. We encourage readers to read more about the mammals they see and identify, and recommend the following sources for their bookshelves and coffee tables - but not necessarily for their field backpack.
Further Reading
Elbroch, M. 2003. Mammal Tracks & Sign: A Guide to North American Species. Stackpole Books, Mechanicsburg, PA.
Glass, Brian P., and Monte L. Thies, 1997. A Key to the Skulls of North American Mammals, 3rd edn. Oklahoma State University.
Nowak, Ronald M., 1999. Walker's Mammals of the World, 6th edn, vols 1 & 2. Johns Hopkins University Press.
Wilson, Don, and Sue Ruff (eds), 1999. The Smithsonian Book of North American Mammals. Smithsonian Institution Press, Washington.
Wilson, Don E., and DeeAnn M. Reeder (eds), 2005, Mammal Species of the World. Johns Hopkins University Press.
Regional Tracking guides, by J. Halfpenny, published by Pequot Press.
The Journal of Mammalogy, published 6 times a year. Hard-core science, not for the faint of heart.
Recommended Internet Resources
The Animal Diversity Web: http://animaldiversity.ummz.umich.edu
Mammal Species of the World Web Site: http://www.bucknell.edu/msw3/
The American Society of Mammalogists: http://www.mammalogy.org
North American Mammals, including interactive maps: http://www.mnh.si.edu/mna/
Using This Book to Identify a Mammal
1. What general type of mammal is it?
Whale? Bat? Mouse? Consult the mammal chart on the next page for hints on general mammal classification, and appropriate page numbers.
2. Look at the mammal pictures.
Examine the artwork that covers your mammal type. Look for pictures similar to your mystery mammal.
3. Consider range maps.
Species that don't live where the mystery animal originated are unlikely, but not impossible, candidates.
4. Compare the candidates.
Look carefully at the illustrations of species that resemble your mystery mammal and are known to live in your area. These should be on the same, or neighboring pages, allowing easy comparisons.
5. Read the details.
The text for each species provides additional details that may help in species identification. If no illustrations match your mystery mammal, look here for details about known variation in size and color. If more than one species seems to match your mystery mammal, look here for details about small characters or measurements that distinguish similar species. Sometimes the distinguishing character is quite technical, and may require examining features of the bones or teeth (e.g. some shrews, some western chipmunks), which may not be practical for all situations. Don't forget to consider habitat type, which is always described in the final sentence of a paragraph, and can sometimes be quite specific and useful in identification.
6. Make identification.
In most cases this book will help you precisely identify your mystery mammal to the species level. However, the species of some groups are very difficult to identify, requiring skeletal material, or even genetic tests (e.g. some gophers and ground squirrels). If this is the case, you may have to settle with a genus level identification (e.g. Thomomys sp.) or a species group identification (e.g. the Richardson's Ground Squirrel Species Group).
How Are Mammals Related?
The family tree of mammals below is arranged to show the basic phylogenetic, or evolutionary, relationships of all of the major orders of mammals. Our understanding of these relationships is changing rapidly, as mammalogists bring to bear a series of new techniques. Significant advances in molecular genetics in recent years have greatly increased our ability to study the evolution of all mammals. In the schematic diagram below, the length of the lines connecting the groups is a relative indication of how closely related each group is to another. This diagram is a composite, based on several recent studies. The actual degree of relatedness is poorly known for most groups. However, ongoing studies not only document changes, but add to our confidence in our ability to recognize phylogenetic relationships.
The study of phylogeny forms part of the field of systematic biology, and scientists doing this type of research are known as systematists, or taxonomists. Understanding systematic relationships at the species level, and at higher taxonomic levels such as the orders shown below, is fundamental to all other studies of the biology of any organism.
Mammal Measurements and Anatomy
Because we rely on differences in morphology to identify mammals, some knowledge of their anatomy is necessary for distinguishing similar species. Traditionally, mammalogists have used measurements of different parts of the body to make these distinctions. Externally, the measurements most often used are Total Length, Tail Length, Hind Foot Length, and Ear Length. For bats, forearm length is also sometimes a useful indicator. We have also included at least Total Length, Tail Length, and Weights for each species; where useful for identification, we have included other measurements in the text. Obviously, these very specific measurements were done on mammals in the hand, and in most cases, on museum specimens. Translating them into useful gauges of the size of an animal you see scampering away from you will be much more difficult. While most measurements and descriptions we give are nontechnical, bats are so specialized that some unfamiliar terminology is needed. The figures on the right illustrate these terms.
- Note on measurements
The main section of the book describing each species uses metric measurements. The following conversions link metric with Imperial measurements:
10mm = 1cm (0.4in) 100cm = 1m (3ft 3in) 1000g = 1kg (2.2lb) 1ha = 2.47 acres
PLATE 1 Opossum and Armadillo
Opossums - This is the only one of the 94 species of New World marsupials that extends its range northward into the United States. The Virginia Opossum is still spreading north in association with human settlements. Frostbite regularly nips off their ear and tail tips on cold winter nights.
Virginia Opossum Didelphis virginiana 350-940mm, 215-470mm, [??] 800-6500g; [??] 300-3700g
Unique with white head and long, scaly, prehensile tail. A medium-sized, rather ponderous-looking mammal with a long pink-tipped snout, white toes, and leathery, white-tipped ears. Body fur is gray with long white and gray guard hairs giving an overall scruffy appearance. Has bright yellow-green eyeshine at night. Known for "playing possum," a catatonic state assumed in the face of danger. Although it is omnivorous, its slow reflexes make it a better scavenger than active hunter. Diet typically includes a mixture of locally abundant fruits, grains, grubs, and carrion. Nocturnal and primarily terrestrial, opossums are also adept climbers and can exploit fruiting trees. For a mammal of its size, opossums have remarkable reproductive potential and very high turnover in their population. Females typically have one litter of 7-9 young, although in the south some females may have a second litter. Babies are born after only a 2-week pregnancy, but grow for another 8 weeks in their mother's pouch. Survival is low and the oldest known wild opossum was 36 months old when last captured. These slow mammals are frequent roadkills, and are often preyed on by predators such as coyotes. Surviving the winter in northern areas requires the use of human houses, barns or sheds as dens. In the south they use a wide variety of woodland habitats. In the northern portions of its range they primarily occur in lower elevation areas with less forest cover and more human development.
Armadillos - Only one of the 21 New World armadillos inhabits the United States. This insectivorous group specializes on ants and termites, and all species have very reduced, peglike teeth.
Nine-banded Armadillo Dasypus novemcinctus 615-800mm, 245-370mm, [??] 5.5-7.7kg; [??] 3.6-6.0kg
Bony skin plates are unique. Long head, prominent ears, short legs, and short, tapered, scaly plated tail are distinctive. Body has nine moveable bands encircling the mid-section. It digs burrows with its nose and forefeet, and lines them with vegetation as a sleeping den. Primarily nocturnal and crepuscular, it is sometimes active during the day in the winter. One of the few mammals with no eyeshine. Surprisingly strong swimmers, can float with their head above water or exhale and sink to walk along stream bottoms. Breed in mid-summer, but implantation of the embryos is delayed, and young are not born until March or April. All litters consist of a set of identical quadruplets that come from a single egg. Although clumsy looking when rooting through leaf litter for insects, it can escape quickly by bounding straight up and then running away quickly. Searches for food with its nose, and digs small conical holes when extracting insects from underground. Armadillos are expanding their range east and northward; they were known only from southern Texas in the 1800s. Their colonization of Florida resulted from a combination of introduced animals in the Miami area in the 1920s and 30s and the natural eastward expansion of animals from Alabama in the early 1970s. Armadillos are adaptable to a wide variety of habitats including woodlands, fields, and brushy areas.
PLATE 2 Eastern Sorex
Sorex shrews - A group of long-tailed, insect-eating shrews. Because of their small size, most are rarely captured in box traps. Pitfall traps have revealed surprising diversity and abundance in many areas. Many of these species are difficult to identify, even for experts. Geographic range, color, and tail distinguish most species, but dental characters are needed for some.
Cinereus Shrew Sorex cinereus 75-125mm, 30-50mm, 2-5g
Tip of tail black. Medium-sized shrew lacking distinctive markings. Back brownish, fur of underparts is gray at base, paler at the tips. Darker color in winter. Tail is long (roughly 40% of total length), brown above and slightly paler below; dark tail tip not always obvious. (For dental characters see page 26.) Nocturnal and rarely seen. Common in northern forests, shrublands, grassy areas, and herbaceous habitats.
Southeastern Shrew Sorex longirostris 75-100mm, 25-40mm, 2-6g
Only long-tailed shrew in most of range. Small brown body with long and narrow rostrum. Broadly distributed in southeastern United States, but rarely seen. Favors moister areas with dense ground cover, but can occur in pine woods and scrub habitats as well.
(Continues...)
Excerpted from MAMMALS OF NORTH AMERICA by ROLAND W. KAYS DON E. WILSON Copyright © 2009 by Princeton University Press. Excerpted by permission.
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Table of Contents
Acknowledgments 6
Introduction 7
Species Included 8
What Is a Species? 8
What Information Is Included? 8
What Information Is Not Included? 10
Further Reading 10
Recommended Internet Resources 10
Using This Book to Identify a Mammal 11
Quick Mammal ID Chart 12
How Are Mammals Related? 16
Mammal Measurements and Anatomy 17
Species Plates 18
Glossary 240
Index 242