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Introductory

WILDLIFE SPECIES: Procyon lotor | Raccoon
ABBREVIATION : PRLO COMMON NAMES : raccoon common raccoon coon TAXONOMY : The currently accepted scientific name for the raccoon is Procyon lotor (Linnaeus) [16]. It is a member of the Family Procyonidae [16,30]. North America subspecies of raccoon are listed below: P. l. auspicatus Nelson (Key Vaca raccoon) P. l. crassidens Hollister P. l. dickeyi Nelson and Goldman P. l. elucus Bangs P. l. fuscipes Mearns P. l. grinnelli Nelson and Goldman P. l. hernandezii Wagler P. l. hirtus Nelson and Goldman P. l. inesperatus Nelson P. l. incautus Nelson (Key West raccoon) P. l. litoreus Nelson and Goldman P. l. lotor (Linneus) P. l. marinus Nelson P. l. maynardi Bangs P. l. megalodous Lowery P. l. mexicanus Baird P. l. pacificus Merriam P. l. pallidus Merriam P. l. psora Gray P. l. pumilus Miller P. l. shufeldti Nelson and Goldman P. l. simus Gidley P. l. solutus Nelson and Goldman P. l. vancouverensis Nelson and Goldman P. l. varius Nelson and Goldman ORDER : Carnivora CLASS : Mammal FEDERAL LEGAL STATUS : See OTHER STATUS OTHER STATUS : Key Vaca raccoons and Key West raccoons are both federally listed as Category 2 subspecies [45]. COMPILED BY AND DATE : Julie L. Tesky, August 1995 LAST REVISED BY AND DATE : NO-ENTRY AUTHORSHIP AND CITATION : Tesky, Julie L. 1995. Procyon lotor. In: Remainder of Citation

WILDLIFE DISTRIBUTION AND OCCURRENCE

WILDLIFE SPECIES: Procyon lotor | Raccoon
GENERAL DISTRIBUTION : Raccoons occur across Canada from Nova Scotia to British Columbia, throughout the conterminous United States except for portions of the northern Rocky Mountains and Great Basin, and south throughout Mexico and Central America. Prior to 1950 raccoons apparently were absent from western Wyoming and western Montana. In recent years they have become common in parts of western Montana but have been seen only rarely in western Wyoming [6,26,30]. The current distribution of subspecies was not described in the literature. ECOSYSTEMS : FRES10 White-red-jack pine FRES11 Spruce-fir FRES12 Longleaf-slash pine FRES13 Loblolly-shortleaf pine FRES14 Oak-pine FRES15 Oak-hickory FRES16 Oak-gum-cypress FRES17 Elm-ash-cottonwood FRES18 Maple-beech-birch FRES19 Aspen-birch FRES20 Douglas-fir FRES21 Ponderosa pine FRES22 Western white pine FRES23 Fir-spruce FRES24 Hemlock-Sitka spruce FRES25 Larch FRES26 Lodgepole pine FRES27 Redwood FRES28 Western hardwoods FRES29 Sagebrush FRES30 Desert shrub FRES31 Shinnery FRES32 Texas savanna FRES33 Southwestern shrubsteppe FRES34 Chaparral-mountain shrub FRES35 Pinyon-juniper FRES36 Mountain grasslands FRES37 Mountain meadows FRES38 Plains grasslands FRES39 Prairie FRES40 Desert grasslands FRES41 Wet grasslands FRES42 Annual grasslands FRES44 Alpine STATES :
AL AZ AR CA CO CT DE FL GA ID
IL IN IA KS KY LA ME MD MA MI
MN MS MO MT NE NV NH NJ NM NY
NC ND OH OK OR PA RI SC SD TN
TX UT VT VA WA WV WI WY DC

AB BC MB NB NF NT NS ON PE PQ
SK YT

MEXICO
BLM PHYSIOGRAPHIC REGIONS : 1 Northern Pacific Border 2 Cascade Mountains 3 Southern Pacific Border 4 Sierra Mountains 5 Columbia Plateau 6 Upper Basin and Range 7 Lower Basin and Range 8 Northern Rocky Mountains 9 Middle Rocky Mountains 10 Wyoming Basin 11 Southern Rocky Mountains 12 Colorado Plateau 13 Rocky Mountain Piedmont 14 Great Plains 15 Black Hills Uplift 16 Upper Missouri Basin and Broken Lands KUCHLER PLANT ASSOCIATIONS : Raccoons probably occur in most Kuchler plant associations. SAF COVER TYPES : Raccoons probably occur in most SAF cover types. SRM (RANGELAND) COVER TYPES : Raccoons probably occur in most SRM (rangeland) cover types. PLANT COMMUNITIES : Throughout their range raccoons are found in almost any plant community where water is available. They are most abundant in hardwood swamps, mangroves (Rhizophora mangle), floodplain forests, and fresh- and saltwater marshes. They are also common in mesic hardwood stands, in cultivated and abandoned farmlands, and in suburban residential areas [6,26,30]. In the prairie provinces of Canada, raccoons are commonly found in quaking aspen (Populus tremuloides) parklands [2]. They are relatively scarce in dry upland woodlands, especially where pines are mixed with hardwoods, and few are found in southern pine forests [6]. REFERENCES : NO-ENTRY

BIOLOGICAL DATA AND HABITAT REQUIREMENTS

WILDLIFE SPECIES: Procyon lotor | Raccoon
TIMING OF MAJOR LIFE HISTORY EVENTS : Breeding season - Raccoons are polygamous. Throughout most of their range raccoons mate from January to March, with a peak in February. In the extreme southeastern United States mating typically occurs later than it does farther north and continues later into the summer. In South Carolina, Georgia, and Louisiana most raccoons mate in March. In Alabama mating occurs from March to June or later, with the peak in April. Adult females that fail to become pregnant during their first estrus in the spring may breed again 2 to 4 months later [6]. Raccoons may breed in their first year or not until their second year [26]. Yearling females that fail to conceive during their first cycle probably do not breed until the next year [6]. Gestation and litter size - Gestation usually lasts from 63 to 65 days, with reported extremes of 54 and 70 days. Litters of one to eight have been reported, with mean litter sizes ranging from two to five. Generally only one litter is produced per year [6,26,30]. Development of young - Raccoons begin walking 4 to 6 weeks after birth, and can generally walk, run, and climb when they are 7 weeks old. Weaning begins when the young leave the den and begin to forage for themselves. Most are weaned by the time they are 16 weeks old, but some may continue to nurse occasionally for several months more. Dispersal of young from their natal den generally occurs in the year following their birth; however, some litters may disperse the fall of their first year [6]. Social organization - Except for females and young, which tend to move as a family group, raccoons are usually solitary. Several raccoons often den together during extremely cold weather; however, and individuals may feed together at a concentrated food source. Raccoons pair only during the breeding season [30]. Activity - Raccoons are typically nocturnal. The peak of feeding activity generally occurs before midnight. Activity rarely begins more than 1 hour before sunset, but return to the daytime resting site is occasionally delayed for several hours after sunrise. Where sub-freezing temperatures and permanent snow cover prevail during the winter in northern latitudes, raccoons typically sleep for several months during the winter. Snow cover is more important than low temperatures in initiating dormancy. Later in the winter, however, 1 to 3 days of temperatures above freezing may bring raccoons out to forage even in deep snow. In the southern states raccoons are generally active throughout the winter [6]. Life span - Most raccoons in the wild live less than 5 years. Mean life spans of 3.1 and 1.8 years have been reported [6]. Raccoons in captivity have lived as long as 13 years [2]. PREFERRED HABITAT : Raccoons are most abundant near water, especially in bottomland forests along streams, hardwood swamps, flooded areas around reservoirs, marshes, and mangrove swamps. Populations are low in southern pine forests, deserts, and mountains above 6,560 feet (2,000 m). Raccoons tend to avoid large open fields; where they have moved onto the prairies of the northern United States and southern Canada they favor buildings, woodlots, and wetlands [6]. A mosaic of small open areas and forested areas with numerous den trees along streams usually sustains the highest population densities of raccoons [30]. Home range - There is great variation in the home range sizes reported for raccoons. Most of the home range diameters fall between 0.6 and 1.9 miles (1-3 km); the maximum reported was 4 miles (6.4 km) [4,6,35]. Adult males generally have larger home ranges than adult females, and may temporarily expand their ranges to visit several females during the mating period. Females greatly restrict their movements during the first few weeks after their litters are born, and juveniles occupy their mother's home range for at least the first few months after leaving the den. Home ranges of males and females as well as ranges of raccoons of the same sex tend to overlap broadly [6]. COVER REQUIREMENTS : Winter dens - The most commonly used winter dens are in hollow trees. Tree dens may be in any hollow limb or trunk of sufficient size. Den cavities examined by Stuewer [35] averaged 11 by 14 inches (29 by 36 cm), and were mostly from 10 to 39 feet (3-12 m) above the ground. Well-insulated winter den sites may be especially important to raccoon survival in the northern part of their range [11]. Ground burrows dug by common gray fox (Urocyon cinereoargenteus), red fox (Vulpes vulpes), woodchuck (Marmota monax), striped skunk (Mephitis mephitis), and American badger (Taxidea taxus) are also used, especially in areas where hollow trees are scarce. Other winter den sites are in rock crevices and caves, abandoned buildings, brush piles, and on the ground in swamps under clumps of cedar (Thuja spp.). Common muskrat (Ondatra zibethicus) houses are used occasionally in marshes where hollow trees are scarce [6,26,30]. Natal dens - A pregnant female chooses a new den in which to have her litter. In many areas, hollow trees are the most popular choice. Underground burrows are also used. Litters may also be raised in rock crevices, caves and abandoned mine shafts, brush and slash piles, sawdust piles, common muskrat lodges, wood duck (Aix sponsa) boxes, and magpie (Pica spp.) nests [6]. All dens are generally located 220 to 460 feet (67-140 m) from water [6]. Daytime rest sites - In marshes, swamps, and open fields the most common resting site is on the ground in herbaceous vegetation. Usually no nest is prepared, but in saltmarshes raccoons build flat platforms of cordgrass (Spartina spp.) and rush (Juncus spp.) as much as 1 mile (1.6 km) from dry land. Raccoons also rest during the day on bare tree limbs, mashed-down eastern gray squirrel (Sciurus carolinensis) nests, and in clumps of Spanish moss (Tillandsia usneoides) [6,21]. Raccoons may change daytime rest sites daily [6]. FOOD HABITS : Raccoons are omnivorous. They eat carrion, garbage, birds, mammals, insects, crayfish (Cambarus spp., Astacus spp.), mussels, other invertebrates, a wide variety of grains and other fruits, and other plant materials. They are selective when food is abundant but eat whatever is available when food is scarce [6,26,30]. Wild cherries (Prunus spp.), apples (Malus spp.), persimmons (Diospyros spp.), and grapes (Vitis spp.) and other berries of all kinds are eaten whenever they are available. Cultivated fruits such as peaches (P. persica), plums (P. augustifolia), figs (Ficus carica), citrus fruits (Citrus spp.), and watermelons (Citrullus vulgaris) are taken on occasion. Nuts, especially acorns, are important seasonal foods. American beech (Fagus grandifolia), hickory (Carya spp.), and pecan (Carya illinoensis) nuts, and walnut (Juglans spp.) fruits are also eaten. Corn is the most important item in the diet in some areas [6,26,30]. The most important animal food is crayfish. Insects, especially grasshoppers, beetles, caterpillars, and true bugs, are also commonly eaten. Among mammals, rodents are the most commonly eaten, including gophers (Geomyidae), ground squirrels (Spermophilus spp.), and tree squirrels (Sciuridae). Young common muskrat are sometimes eaten in the spring, while adults may be taken from traps or as carrion. Cottontails (Sylvilagus spp.) and other rabbits (Leporidae), shrews (Soricidae), and moles (Talpidae) are also commonly eaten. Even jackrabbits (Lepus spp.), small raccoons, and mink (Mustela vison) are occasionally eaten. Garbage is a common element of the diet of raccoons around farms and towns [6]. Raccoons sometimes eat passerine birds (Passeriformes), woodpeckers (Picidae), ring-necked pheasants (Phasianus colchicus), and northern bobwhite (Colinus virginianus). Occasionally they also take ducks (Antidae) and American coots (Fulica americana). Waterfowl are most often taken as cripples or carrion during the hunting season. Raccoons also eat bird eggs, including those of ring-necked pheasant, northern bobwhite, wild turkey (Meleagris gallopavo), ducks, and shorebirds (Charadriiformes) [6,15]. Turtles and especially their eggs are eaten in some areas. Fishes are often taken in small numbers, and may temporarily become important food items when they are easily caught in drying pools [6]. Despite the great variety of foods eaten, raccoons tend to follow a general pattern of seasonal diet changes. Only in the spring do most raccoons eat more animal than plant food. Crayfish are the most important food at this time, followed by insects and small vertebrates. Acorns are also an important food early in the spring before other foods are available [6]. During the summer raccoons in most habitats primarily eat fruits. The most important animal foods are crayfish, followed by insects and small vertebrates [6,33]. In the fall plants, especially fruits, continue to be more important than animals in the raccoon diet. Acorns become the most important food in the winter [6]. PREDATORS : Raccoon predators include mountain lions (Felis concolor), bobcats (Lynx rufus), gray wolves (Canis lupus), red foxes, coyotes (C. latrans), fishers (Martes pennanti), and owls (Strigiformes) [26]. Humans hunt and trap raccoons [6]. MANAGEMENT CONSIDERATIONS : Habitat management - To enhance and maintain habitat quality for raccoons, managers should protect small woodlands in agricultural areas from severe fire, harvest, and grazing. Wild fruits should be encouraged, and mast producing trees (especially oaks and American beech) should be preserved. Streams, swamps, marshes, and beaver (Castor canadensis) colonies should be protected from destruction and pollution, and ponds and marshes should be constructed near woodlands. Den trees and potential den trees should be given special protection. Stuewer [35] recommended leaving at least one, preferably two den trees per 15 to 20 acres (6-8 ha) and within 0.25 mile (0.4 km) of a permanent water supply. Where natural dens are scarce, artificial den boxes should be set up in woodlands near water [6]. Information regarding artificial dens for raccoons is available in Stuewer [36]. Wilson [41] discussed the following recommendations for improving woodland areas for raccoons in North Carolina: (1) cut no hollow trees during logging; (2) install artificial dens if den trees are lacking; (3) manage woodlands for oaks, persimmons, and grapes (including planting fencerows and field borders with persimmons and grapes); and (4) keep livestock out of the woods. Raccoons have been used as indicator species for monitoring of environmental zoonosis (a disease communicable from lower animals to humans under natural conditions) and pollutants. In Florida raccoon serum is routinely examined for evidence of St. Louis encephalitis, Venezuelan equine encephalitis, and eastern equine encephalomyelitis [6]. The literature on raccoon parasites and diseases is voluminous. The only diseases likely to have a significant impact on raccoon populations are canine distemper and rabies [22]. Distemper is widespread in raccoon populations. Although rabies is common in raccoon populations, it does not appear to spread readily from raccoons to other species. Rabid raccoons are often passive and unaggressive. Raccoons carry at least 13 pathogens known to cause disease in humans [6]. Extensive bibliographies on parasites and diseases of raccoons are available in Halloran [17] and Sanderson and others [31]. Raccoons are one of the most frequent nuisance animals reported by wildlife agencies in urban and suburban areas of the United States [8]. Raccoons sometimes cause agricultural damage in orchards, vineyards, melon patches, corn fields, peanut fields, and chicken yards. They are sometimes regarded as serious threats to nesting waterfowl. In many cases, however, raccoon damage to crops and game species is inconsequential, temporary, or very local and often caused by only one or a few individuals [6]. Human activities - Hunting, trapping, and automobile road kills are believed to be the main cause of mortality in many parts of the raccoon's range [30]. REFERENCES : NO-ENTRY

FIRE EFFECTS AND USE

WILDLIFE SPECIES: Procyon lotor | Raccoon
DIRECT FIRE EFFECTS ON ANIMALS : Raccoons are very mobile and probably escape most fires. There are no reports of direct raccoon mortality due to fire [24,28]. Dead insects and small mammals on fresh burns may be attractive to raccoons [44]. Sunguist [38] reported on the reactions of raccoons to a controlled fire on the Cedar Creek Natural History Area in east-central Minnesota, which burned 24 acres (10 ha) of savanna habitat. The burn area was not heavily utilized by raccoons before the fire and even less utilization occurred after. During the 4 days prior to the fire three of four raccoons visited or traveled through the area to be burned seven times and spent approximately 2 hours and 15 minutes (total time) in the area. The raccoons did not enter the burn area on the day of the fire although they rested at different locations within 0.25 to 0.5 mile (0.4-0.8 km) of it. During the 4 days after the fire all four raccoons visited or traveled through the burned area six times and spent approximately 2 hours and 30 minutes (total time) in it. HABITAT RELATED FIRE EFFECTS : Fire that creates a mosaic of burned and unburned areas is probably the most beneficial to raccoons. Lynch [27] reported that in Gulf Coast marshes, raccoons were favored by "spotty cover burns" (burning the area when there is from 3 to 5 inches [8-13 cm] of standing water present). The unburned marsh vegetation provided cover for raccoons. Longhurst's [25] observations at the Hopland Field Station in California showed that populations of raccoons increased in young to intermediate chaparral and grassland-chaparral interspersion. Populations showed a downward trend in both mature chaparral and extensive grasslands. Periodic fire may also help to maintain raccoon food. Insects and the fruit of various plants are important in the diet of raccoons. Populations of insects may increase or decrease as a result of fire depending on fire severity, habitat, and number of years after fire. Effects of late winter controlled burning in broom sedge (Carex scoparia) habitat on arthropod density and biomass were studied by Hurst [20]. Results of summer sampling revealed that burning increased both density and biomass of most insect orders. The apparent cause of the increases was an increased insect food supply in the form of succulent plant growth following burning in 4- to 5 -year-old broom sedge habitat. Oaks, persimmons, plums, cherries, and grapes can be severely reduced by fire in the short term. However, except for grapes, these woody species require openings for establishment. Edges of burns along forested areas may be common regeneration sites for many of these plants. Many fruiting shrubs such as blackberries (Rubus spp.), blueberries (Vaccinium spp.), and huckleberries (Vaccinium ssp., Gaylussacia spp.) do not fruit the year of burning but produce the most fruit 2 to 4 years after fire pruning [19,24]. FIRE USE : Areas supporting fire-sensitive mast and fruit producing hardwood species (e.g., large oaks and persimmon) should be protected from burning until they have established [19,24]. REFERENCES : NO-ENTRY

References for species: Procyon lotor


1. Allen, A. W. 1987. The relationship between habitat and furbearers. In: Novak, Milan; Baker, J. A.; Obbard, M. E.; Malloch, Bruce, eds. Wild furbearer management and conservation in North America. Ottawa, ON: Ontario Ministry of Natural Resources: 164-179. [24997]
2. Banfield, A. W. F. 1974. The mammals of Canada. Toronto, ON: University of Toronto Press. 438 p. [21084]
3. Bernard, Stephen R.; Brown, Kenneth F. 1977. Distribution of mammals, reptiles, and amphibians by BLM physiographic regions and A.W. Kuchler's associations for the eleven western states. Tech. Note 301. Denver, CO: U.S. Department of the Interior, Bureau of Land Management. 169 p. [434]
4. Butterfield, Robert T. 1944. Populations, hunting pressure, and movement of Ohio raccoons. Transactions, 9th North American Wildlife Conference. 9: 337-344. [25270]
5. Cagle, Fed R. 1949. Notes on the raccoon, Procyon lotor megalodous Lowery. Journal of Mammalogy. 30(1): 45-47. [25271]
6. Chapman, Joseph A.; Feldhamer, George A., eds. 1982. Wild mammals of North America. Baltimore, MD: The Johns Hopkins University Press. 1147 p. [21085]
7. Cushwa, Charles T.; Martin, Robert E. 1969. The status of prescribed burning for wildlife management in the Southeast. Proceedings, 34th North American Wildlife and Natural Resource Conference. 34: 419-428. [15652]
8. De Almeida, M. H. 1987. Nuisance furbearer damage control in urban and suburban areas. In: Novak, Milan; Baker, James A.; Obbard, Martyn E.; Malloch, Bruce, eds. Wild furbearer management and conservation in North America. North Bay, ON: Ontario Trappers Association: [Pages unknown]. [25347]
9. Eyre, F. H., ed. 1980. Forest cover types of the United States and Canada. Washington, DC: Society of American Foresters. 148 p. [905]
10. Fritzell, Erik K. 1978. Habitat use by prairie raccoons during the waterfowl breeding season. Journal of Wildlife Management. 42(1): 118-127. [25338]
11. Fritzell, Erik K. 1989. Mammals in prairie wetlands. In: Vander Valk, Arnold, ed. Northern prairie wetlands. Ames, IA: Iowa State University Press: 268-301. [15219]
12. Garrison, George A.; Bjugstad, Ardell J.; Duncan, Don A.; [and others]. 1977. Vegetation and environmental features of forest and range ecosystems. Agric. Handb. 475. Washington, DC: U.S. Department of Agriculture, Forest Service. 68 p. [998]
13. Goldman, E. A. 1950. Raccoons of North and Middle America. North America Fauna No. 60. 153 p. [25351]
14. Gray, Marion H.; Arner, Dale H. 1977. The effects of channelization on furbearers and furbearer habitat. Proceedings, Annual Conference of Southeastern Association of Fish and Wildlife Agencies. 31: 259-265. [25340]
15. Greenwood, Raymond J. 1981. Foods of prairie raccoons durning the waterfowl nesting season. Journal of Wildlife Management. 45(3): 754-760. [25272]
16. Hall, E. Raymond. 1981. The mammals of North America. 2nd ed. Vol. 2. New York: John Wiley and Sons. 1271 p. [14765]
17. Halloran, P. O. 1955. A bibliography of references to diseases of wild animals and birds. American Veterinarian Research 16. Number 61: Part 2. 465 p. [25352]
18. Hamilton, W. J., Jr. 1951. Warm weather foods of the raccoon in New York State. Journal of Mammalogy. 32(3): 341-344. [25273]
19. Hon, Tip. 1981. Effects of prescribed fire on furbearers in the South. In: Wood, Gene W., ed. Prescribed fire and wildlife in southern forests: Proceedings of a symposium; 1981 April 6-8; Myrtle Beach, SC. Georgetown, SC: Clemson University, Belle W. Baruch Forest Science Institute: 121-128. [14818]
20. Hurst, George A. 1971. The effects of controlled burning on arthropod density and biomass in relation to bobwhite quail brood habitat on a right-of-way. In: Tall Timbers conference on ecological animal control by habitat management: Proceedings. Number 2. Tallahassee, FL: Tall Timbers Research Station: 173-183. [25148]
21. Ivey, R. DeWitt. 1948. The raccoon in the salt marshes of northeastern Florida. Journal of Mammalogy. 29(3): 290-291. [25274]
22. Johnson, A. S. 1970. Biology of the raccoon (Procyon lotor varius Nelson & Goldman) in Alabama. Bulletin 402. Auburn, AL: Auburn University, Alabama Agricultural Experiment Station. 148 p. [25349]
23. Kuchler, A. W. 1964. Manual to accompany the map of potential vegetation of the conterminous United States. Special Publication No. 36. New York: American Geographical Society. 77 p. [1384]
24. Landers, J. Larry. 1987. Prescribed burning for managing wildlife in southeastern pine forests. In: Dickson, James G.; Maughan, O. Eugene, eds. Managing southern forests for wildlife and fish: a proceedings; [Date of conference unknown]; [Location of conference unknown]. Gen. Tech. Rep. SO-65. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station: 19-27. [11562]
25. Longhurst, William M. 1978. Responses of bird and mammal populations to fire in chaparral. California Agriculture. 32(10): 9-12. [7639]
26. Lotze, Joerg-Henner; Anderson, Sydney. 1970. Procyon lotor. Mammalian Species. 119: 1-8. [25346]
27. Lynch, John J. 1941. The place of burning in management of the Gulf Coast wildlife refuges. Journal of Wildlife Management. 5(4): 454-457. [14640]
28. Nichols, R.; Menke, J. 1984. Effects of chaparral shrubland fire on terrestrial wildlife. In: DeVries, Johannes J., ed. Shrublands in California: literature review and research needed for management. Contribution No. 191. Davis, CA: University of California, Water Resources Center: 74-97. [5706]
29. Rivest, Pierre; Bergeron, Jean-Marie. 1981. Density, food habits, and economic importance of raccoons (Procyon lotor) in Quebec agrosystems. Canadian Journal of Zoology. 59: 1755-1762. [25341]
30. Sanderson, G. C. 1987. Raccoon. In: Novak, Milan; Baker, James A.; Obbard, Martyn E.; Malloch, Bruce, eds. Wild furbearer management and conservation in North America. North Bay, ON: Ontario Trappers Association: [Pages unknown]. [25348]
31. Sanderson, G. C.; Mech, L. D.; Schnell, J. H. 1967. A contribution to a bibliography of the raccoon (Procyon lotor). Contract AT (11-1)-1332 (Document COO-1332). [Washington, DC]: U.S. Atomic Energy Commission. 51 p. Mimeo. [25353]
32. Schneider, Dean G.; Mech, L. David; Tester, John R. 1971. Movements of female raccoons and their young as determined by radio-tracking. Animal Behaviour Monograph. 4: 1-43. [25339]
33. Schoonover, Lyle J.; Marshall, William H. 1951. Food habits of the raccoon (Procyon lotor hirtus) in north-central Minnesota. Journal of Mammalogy. 32(4): 422-428. [25342]
34. Shiflet, Thomas N., ed. 1994. Rangeland cover types of the United States. Denver, CO: Society for Range Management. 152 p. [23362]
35. Stuewer, Frederick W. 1943. Raccoons: their habits and management in Michigan. Ecological Monographs. 13(2): 203-257. [25343]
36. Stuewer, Frederick W. 1948. Artificial dens for raccoons. Journal of Wildlife Management. 12(3): 296-301. [25344]
37. Spowart, Richard A.; Samson, Fred B. 1986. Carnivores. In: Cooperrider, Allan Y.; Boyd, Raymond J.; Stuart, Hanson R., eds. Inventory and monitoring of wildlife habitat. Denver, CO: U.S. Department of the Interior, Bureau of Land Management, Service Center: 475-496. [13526]
38. Sunquist, Melvin E. 1967. Effect of fire on raccoon behavior. Journal of Mammalogy. 48(4): 673-674. [13460]
39. Van Gelden, Richard George. 1982. Mammals of the National Parks. Baltimore, MD: Johns Hopkins University Press. 310 p. [20893]
40. Verner, Jared; Boss, Allan S., tech. coords. 1980. California wildlife and their habitats: western Sierra Nevada. Gen. Tech. Rep. PSW-37. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 439 p. [10237]
41. Wilson, K. A. 1955. Fur resource of North Carolina. Pittman-Robertson Project W-6-R. Raleigh, NC: North Carolina Wildlife Resource Commission. 59 p. [25350]
42. Wright, Henry A.; Bailey, Arthur W. 1982. Fire ecology: United States and southern Canada. New York: John Wiley & Sons. 501 p. [2620]
43. Yeager, Lee E. 1937. Naturally sustained yield in a farm fur crop in Mississippi. Journal of Wildlife Management. 1(1-2): 28-36. [25345]
44. Benseler, Rolf Wilhelm. 1968. Studies in the reproductive biology of Aesculus californica (Spach) Nutt. Berkeley, CA: University of California. 155 p. Dissertation. [18978]
45. U.S. Department of the Interior, Fish and Wildlife Service. 1994. Endangered and threatened wildlife and plants; animal candidate review for listing as endangered or threatened species; proposed rule. 50 CFR Part 17. Tuesday, November 15, 1994. Federal Register. 59(219): 58982-59028. [24357]


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