Canada Lynx - Lynx canadensis
The Canada Lynx is a medium-sized cat (about 10 kilograms for males and 8 kilograms for females) with silver-gray to grayish-brown upperparts and a white belly and throat. Lynx have long legs and a relatively short, compact body. The total length averages approximately 92.5 centimeters for males and 89.5 centimeters for females (Foresman 2012). A facial ruff surrounds the face except directly beneath the snout. The facial ruff is longest on either side of the snout and has black markings on these longest hairs. The ears are 70 to 80 millimeters long and have a long, 30 millimeters black tuft at the end. The backs of the ears are darker than the rest of the body and have a central white spot. The feet are large and round (10 x 10 centimeters) and heavily furred (Foresman 2012). The tail is short and the tip is entirely black.
Canada Lynx are most similar to Bobcats, but differ in many respects. At a distance, Canada Lynx appear leggier and are grayer in color, with less distinctive spotting (Foresman 2012). Canada Lynx have much larger feet and longer ear tufts. In addition, the entire tail tip is black in Canada Lynx whereas in Bobcats the underside of the tail tip is white (Foresman 2012) and the back of the hind legs is black on Bobcats and a light beige color on Canada Lynx. Immature Mountain Lions may be superficially similar to Canada Lynx but have a much longer tail and body.
Western Hemisphere Range
Summary of Observations Submitted for Montana
Number of Observations:
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
Canada Lynx are non-migratory, but movements of 90 to 125 miles have been recorded between Montana and Canada (Hash 1990). In other areas, long distance dispersal has been reported to range from 103 to 616 kilometers (Saunders 1963, Nellis and Wetmore 1969, Brainerd 1985, Ward 1985, Brittell et al. 1989).
Canada Lynx west of the Continental Divide generally occur in subalpine forests between 1,220 and 2,150 meters in stands composed of pure lodgepole pine but also mixed stands of subalpine fir, lodgepole pine, Douglas-fir, grand fir, western larch and hardwoods (Ruediger et al. 2000). In extreme northwestern Montana, primary vegetation may include cedar-hemlock habitat types (Ruediger et al. 2000). East of the Continental Divide the subalpine forests inhabited by Canada Lynx occur at higher elevations (1,650 to 2,400 meters) and are composed mostly of subalpine fir. Secondary habitat is intermixed Englemann spruce and Douglas-fir habitat types where lodgepole pine is a major seral species (Ruediger et al. 2000). Throughout their range, shrub-steppe habitats may provide important linkage habitat between the primary habitat types described above (Reudiger et al. 2000). Typical snow conditions are important factors for Canada Lynx, with occurrence primarily in habitats that also receive relatively uniform and moderately deep snowfall amounts (total annual snowfall of 100 to 127 centimeters) (Kelsall et al. 1977). Within these habitat types, disturbances that create early successional stages such as fire, insect infestations, and timber harvest, provide foraging habitat for lynx by creating forage and cover for Snowshoe Hares, although older forests also provide habitats for Snowshoe Hares and Canada Lynx for longer periods of time than disturbance-created habitats (Ruediger et al. 2000).
Canada Lynx avoid large openings but often hunt along edges in areas of dense cover (Ruediger et al. 2000). When inactive or birthing, they occupy dens typically in hollow trees, under stumps, or in thick brush. Den sites tend to be in mature or old-growth stands with a high density of logs (Koehler 1990, Koehler and Brittell 1990). These habitats must be near or adjacent to foraging habitat because the hunting range of the female is reduced during this time (Ruediger et al. 2000).
In the South Fork Flathead, Canada Lynx were mostly located in fire-created, densely stocked young stands of lodgepole pine where Snowshoe Hares were most abundant. No locations in open or semi-open areas were observed (Koehler at al. 1979). In the Garnet Range, most were found in subalpine fir forest (Smith 1984). Denning sites are found in mature and old-growth lodgepole pine, spruce, and subalpine fir forests with a high density of logs (Koehler 1990, Koehler and Brittell 1990). Denning stands need not be large (1 to 3 hectares) but several stands should be interconnected (Koehler and Brittell 1990). Canada Lynx require cover for stalking and security, and usually do not cross openings wider than 100 meters (Koehler and Brittell 1990).
Ecological Systems Associated with this Species
- Details on Creation and Suggested Uses and Limitations
How Associations Were Made
We associated the use and habitat quality (high, medium, or low) of each of the 82 ecological systems mapped in Montana for
vertebrate animal species that regularly breed, overwinter, or migrate through the state by:
- Using personal observations and reviewing literature that summarize the breeding, overwintering, or migratory habitat requirements of each species (Dobkin 1992, Hart et al. 1998, Hutto and Young 1999, Maxell 2000, Foresman 2001, Adams 2003, and Werner et al. 2004);
- Evaluating structural characteristics and distribution of each ecological system relative to the species’ range and habitat requirements;
- Examining the observation records for each species in the state-wide point database associated with each ecological system;
- Calculating the percentage of observations associated with each ecological system relative to the percent of Montana covered by each ecological system to get a measure of “observations versus availability of habitat”.
Species that breed in Montana were only evaluated for breeding habitat use, species that only overwinter in Montana were only evaluated for overwintering habitat use, and species that only migrate through Montana were only evaluated for migratory habitat use.
In general, species were associated as using an ecological system if structural characteristics of used habitat documented in the literature were present in the ecological system or large numbers of point observations were associated with the ecological system.
However, species were not associated with an ecological system if there was no support in the literature for use of structural characteristics in an ecological system, even if
point observations were associated with that system.
High, medium, and low habitat quality was assigned based on the degree to which the structural characteristics of an ecological system matched the preferred structural habitat characteristics for each species in the literature.
The percentage of observations associated with each ecological system relative to the percent of Montana covered by each ecological system was also used to guide assignments of habitat quality.
If you have any questions or comments on species associations with ecological systems, please contact Bryce Maxell at firstname.lastname@example.org
or (406) 444-3655.
Suggested Uses and Limitations
Species associations with ecological systems should be used to generate potential lists of species that may occupy broader landscapes for the purposes of landscape-level planning.
These potential lists of species should not be used in place of documented occurrences of species (this information can be requested at: http://mtnhp.org/requests/default.asp
) or systematic surveys for species and evaluations of habitat at a local site level by trained biologists.
Users of this information should be aware that the land cover data used to generate species associations is based on imagery from the late 1990s and early 2000s and was only intended to be used at broader landscape scales.
Land cover mapping accuracy is particularly problematic when the systems occur as small patches or where the land cover types have been altered over the past decade.
Thus, particular caution should be used when using the associations in assessments of smaller areas (e.g., evaluations of public land survey sections).
Finally, although a species may be associated with a particular ecological system within its known geographic range, portions of that ecological system may occur outside of the species’ known geographic range.
- Adams, R.A. 2003. Bats of the Rocky Mountain West; natural history, ecology, and conservation. Boulder, CO: University Press of Colorado. 289 p.
- Dobkin, D. S. 1992. Neotropical migrant land birds in the Northern Rockies and Great Plains. USDA Forest Service, Northern Region. Publication No. R1-93-34. Missoula, MT.
- Foresman, K.R. 2001. The wild mammals of Montana. Special Publication No. 12. Lawrence, KS: The American Society of Mammalogists. 278 p.
- Hart, M.M., W.A. Williams, P.C. Thornton, K.P. McLaughlin, C.M. Tobalske, B.A. Maxell, D.P. Hendricks, C.R. Peterson, and R.L. Redmond. 1998. Montana atlas of terrestrial vertebrates. Montana Cooperative Wildlife Research Unit, University of Montana, Missoula, MT. 1302 p.
- Hutto, R.L. and J.S. Young. 1999. Habitat relationships of landbirds in the Northern Region, USDA Forest Service, Rocky Mountain Research Station RMRS-GTR-32. 72 p.
- Maxell, B.A. 2000. Management of Montana’s amphibians: a review of factors that may present a risk to population viability and accounts on the identification, distribution, taxonomy, habitat use, natural history, and the status and conservation of individual species. Report to U.S. Forest Service Region 1. Missoula, MT: Wildlife Biology Program, University of Montana. 161 p.
- Werner, J.K., B.A. Maxell, P. Hendricks, and D. Flath. 2004. Amphibians and reptiles of Montana. Missoula, MT: Mountain Press Publishing Company. 262 p.
- Commonly Associated with these Ecological Systems
Forest and Woodland Systems
Shrubland, Steppe and Savanna Systems
Wetland and Riparian Systems
- Occasionally Associated with these Ecological Systems
Forest and Woodland Systems
Shrubland, Steppe and Savanna Systems
Wetland and Riparian Systems
The primary winter food for Canada Lynx throughout their range is the Snowshoe Hare (Lepus americanus), comprising 35 to 97% of their diet (Koehler and Aubry 1994). Red Squirrels are also an important prey item, particularly when Snowshoe Hare populations are reduced (Ruediger et al. 2000). Summer diets are not as well known but are probably more varied (Mowat et al. 2000). Canada Lynx in Montana probably prey on a wider variety of species throughout the year because of generally lower Snowshoe Hare densities and available alternate prey (Ruediger et al. 2000). Other known prey items include grouse, Northern Flying Squirrel, ground squirrels, Porcupines, Beavers, mice, voles, shrews and occasionally ungulates as prey or carrion (Reudiger et al. 2000).
Canada Lynx populations are tied to Snowshoe Hare populations and cycle with them. Snowshoe Hare populations were not thought to cycle in Montana, but recent research suggests that southern Snowshoe Hare populations do cycle, but not at the amplitude of northern populations (Hodges 2000). Southern Snowshoe Hare populations also exist at lower densities than northern populations (Koehler and Aubry 1994). Montana Canada Lynx ecology is subsequently different than those populations further north with average home ranges nearly twice the size of those found in the north (Aubrey et al. 2000). Home ranges are quite variable with increasing home range sizes during periods of low Snowshoe Hare populations (Ruediger et al. 2000). Home ranges of males are larger than that of females. Long distance dispersal movements of up to several hundred kilometers have been recorded and dispersal is common and thought to be essential for population regulation (Schwartz et. al. 2002). Population density is usually less than 10 (locally up to 20) per 100 square kilometers, depending on prey availability. Mean densities range between 2 and 9 per 100 square kilometers (McCord and Cardoza 1982).
Home range sizes in North America are large, varying from 10 to 243 square kilometers (McCord and Cardoza 1982); typical home ranges are 16 to 20 square kilometers (Quinn and Parker 1987, Butts 1992). Home range sizes vary with sex, age, population density, prey density, and method of survey and calculation (McCord and Cardoza 1982, Ward and Krebs 1985, Quinn and Parker 1987, Hatler 1988). Some researchers have reported Canada Lynx maintain single sex territories (especially males) with male territories overlapping female territories (Mech 1980, Stephenson 1986, Koehler 1987). However, others found substantial overlap between territories of both the same and opposite sexed animals (Nellis et al. 1972, Brand et al. 1976, Carbyn and Patriquin 1983, Ward and Krebs 1985). Where Canada Lynx and Bobcat are sympatric, home ranges overlap; however Bobcats are at lower elevation in winter (Smith 1984).
Canada Lynx breed through March and April. Gestation lasts 62 to 74 days with litter sizes averaging 3 or 4. Males do not help rear the young. Adult females produce one litter every 1 to 2 years and the young stay with their mother until next mating season or longer. Some females give birth as yearlings, particularly during years with high Snowshoe Hare populations, but their pregnancy rate is lower than that of older females (Brainerd 1985). Prey scarcity suppresses breeding and may result in mortality of nearly all young (Brand and Keith 1979). In Alberta, reproduction fell 38% (ovulation rates, pregnancy rates and litter size) and mortality of kittens reached 95% during cyclic Snowshoe Hare population lows (Brand and Keith 1979).
On February 24, 2000, the U.S. Fish and Wildlife Service listed the Canada Lynx as Threatened under the Endangered Species Act and on February 24, 2009 Critical Habitat was designated as the boreal forests of northwestern Montana and the area around the Greater Yellowstone Ecosystem. Additional information on the species' management and areas designated as Critical Habitat can be found on the U.S. Fish and Wildlife Service's Canada Lynx web page
Canada Lynx are classified as a furbearer in Montana, but the trapping season is currently closed. Accidentally trapped Canada Lynx that are uninjured must be released immediately and the incident must be reported to a designated Fish, Wildlife & Parks employee within five (5) days of release. Trappers that accidentally capture a Canada Lynx that cannot be released uninjured must notify a designated Fish, Wildlife & Parks employee residing in the trapping district where the animal was taken within 24 hours to arrange collection of the animal. It is unlawful for any person to retain possession of an incidentally taken furbearer per MCA 87-1-102.
- Literature Cited AboveLegend: View WorldCat Record View Online Publication
- Aubry, K.B., G.M. Koehler, J.R. Squires. 2000. Ecology of Canada lynx in southern boreal forests. In: Ruggiero, L.F., K.B Aubry, S.W. Buskirk, et al., eds. The scientific basis for lynx conservation in the contiguous United States. General Technical Report RMRSGTR- 30. University Press of Colorado, Niwot, CO. U.S. Department of Agriculture, U.S. Forest Service, and the Rocky Mountain Research Station.
- Brainerd, S. M. 1985. Reproductive ecology of bobcats and lynx in western Montana. M.S. thesis. University of Montana, Missoula. 85 pp.
- Brand, C. J. and L. B. Keith. 1979. Lynx demography during a snowshoe hare decline in Alberta. Journal of Wildlife Management 43:827-849.
- Brand, C. J., L. B. Keith and C. A. Fischer. 1976. Lynx responses to changing snowshoe hare densities in central Alberta. Journal of Wildlife Management 40(3):416-428.
- Brittell, J. D., R. J. Poelker, S. J. Sweeney, and G. M. Koehler. 1989. Native cats of Washington. Section III: Lynx. Washington Department of Wildlife, Olympia. 169 pp.
- Butts, T.W. 1992. Lynx (Felis lynx) biology and management: a literature review and annotated bibliography. USDA Forest Service, Northern Region. Threatened, Endangered, and Sensitive Program, Missoula, MT. 114 pp. + appendix.
- Carbyn, L. N. and D. Patriquin. 1983. Observations on home range sizes, movements, and social organization of lynx (Lynx canadensis) in Riding Mountain National Park. Canadian Field-Naturalist 97:262-267.
- Foresman, K. R. 2012. Mammals of Montana. Second edition. Mountain Press Publishing, Missoula, Montana. 429 pp.
- Hash, H. 1990. Montana lynx population status and considerations (1990). Unpublished report to the Montana Department of Fish, Wildlife and Parks, Helena, MT. 13 pp.
- Hatler, D. F. 1988. A lynx management strategy for British Columbia. Ministry of Environment, Wildlife Branch, Victoria, B.C. 115 pp.
- Hodges, K.E. 2000. Ecology of snowshoe hares in southern boreal and montane forests. In: Ruggiero, L.F., K.B Aubry, S.W. Buskirk, et al., eds. The scientific basis for lynx conservation in the contiguous United States. General Technical Report RMRS-GTR-30. University Press of Colorado, Niwot, CO. U.S. Department of Agriculture, U.S. Forest Service, and the Rocky Mountain Research Station.
- Kelsall, J. P., E. S. Telfer, and T. D. Wright. 1977. The effects of fire on the ecology of the boreal forest, with particular reference to the Canadian north: a review and selected bibliography. Canadian Wildlife Service Occasional Paper. 58 pp.
- Koehler, G. M. 1987. The ecology of the lynx (Lynx canadensis) in northcentral Washington. Unpublished Progress Report, Wildlife Research Institute, University of Idaho, Moscow. 25 pp.
- Koehler, G. M., M. G. Hornocker, and H. S. Hash. 1979. Lynx movements and habitat use in Montana. Canadian Field-Naturalist 93:441-442.
- Koehler, G.M. 1990. Population and habitat characteristics of lynx and snowshoe hares in north central Washington. Canadian Journal of Zoology 68:845-851.
- Koehler, G.M. and J.D. Brittell. 1990. Managing spruce-fir habitat for lynx and snowshoe hares. Journal of Forestry 88: 10-14.
- Koehler, G.M. and K.B. Aubry. 1994. Lynx. In: Ruggiero, L. F., K.B. Aubrey, S.W. Buskirk, L.J. Lyon and W.J. Zielinski, eds. The scientific basis for conserving forest carnivores: American marten, fisher, lynx and wolverine in the western United States. pp. 74-98. U.S. Forest Service General Technical Report RM-254.
- McCord, C. M. and J. E. Cardoza. 1982. Bobcat and lynx. In: J. A. Chapman and G. A. Feldhamer, eds. Wild mammals of North America: Biology, management and economics. pp. 728-766. Johns Hopkins University Press, Baltimore.
- Mech, L. D. 1980. Age, sex, reproduction, spatial organization of lynxes colonizing northeastern Minnesota. Journal of Mammalogy 61:261-267.
- Mowat, G., K.G. Poole, M. O'Donoghue. 2000. Ecology of lynx in northern Canada and Alaska. In: Ruggiero, L.F., K.B Aubry, S.W. Buskirk, et al., eds. The scientific basis for lynx conservation in the contiguous United States. General Technical Report RMRSGTR- 30. University Press of Colorado, Niwot, CO. U.S. Department of Agriculture, U.S. Forest Service, and the Rocky Mountain Research Station.
- Nellis, C. H. and S. P. Wetmore. 1969. Long-range movements of lynx in Alberta. Journal of Mammalogy 50:640.
- Nellis, C. H., S. P. Wetmore, and L. B. Keith. 1972. Lynx-prey interactions in central Alberta. Journal of Wildlife Management 36:320-329.
- Quinn, N. W. S. and G. Parker. 1987. Lynx. In: M. Novak, J. A. Baker, M. E. Obbard and B. Malloch, eds. Wild furbearer management and conservation in North America. Ministry of Natural Resources, Ontario.
- Ruediger, B., et al. 2000. Canada lynx conservation assessment and strategy, 2nd edition. USDA Forest Service, USDI Fish and Wildlife Service, USDI Bureau of Land Management, and USDI National Park Service. Forest Service Publication #R1-00-53. Missoula, Montana. 142 pp.
- Saunders, J. K., Jr. 1963. Food habits of the lynx in Newfoundland. Journal of Wildlife Management 27:384-390.
- Schwartz, M.K., L.S. Mills, K.S. McKelvey, L.F. Ruggiero, F.W. Allendorf. 2002. DNA reveals high dispersal synchronizing the population dynamics of Canada lynx. Nature 415:520-522.
- Smith, D. 1984. Habitat use, home range, and movements of bobcats in western Montana. Thesis. University of Montana, Missoula, MT.
- Stephenson, R. O. 1986. Development of lynx population estimation techniques. Alaska Department of Fish and Game, unpublished report. Pittman-Robertson Progress Report W-22-2,3,4, Job 7.12R. 84 pp.
- Ward, R. M. P. 1985. Behavioral responses of lynx to declining snowshoe hare abundance. M.S. thesis. University of B.C., Vancouver. 106 pp.
- Ward, R. M. P. and C. J. Krebs. 1985. Behavioural responses of lynx to declining snowshoe hare abundance. Canadian Journal of Zoology 63:2817-2824.
- Additional ReferencesLegend: View WorldCat Record View Online Publication
Do you know of a citation we're missing?
- Abstracts from Montana Rare Animal Meeting. 1992. [November 5-6, 1992]. Lewistown, MT. 20 pp.
- Allen, A.W. 1987. The relationship between habitat and furbearers. Pages 164-179 in M. Novak, J.A. Baker, M.E. Obbard, and B. Malloch, eds. Wild Furbearer Management and Conservation in North America. Ontario Trappers Assn. and Ontario Ministry Nat. Res., Toronto, Ontario.
- Banci, V. 1994. Wolverine. Pp. 99-127. IN: Ruggiero, L. F., K. B. Aubry, S. W. Buskirk, L. J. Lyon, amd W. J. Zielinski (eds.), The scientific basis for conserving forest carnivores, American marten, fisher, lynx, and wolverine in the western United States. U.S.D.A, Forest Serv. Rocky Mountain Forest and Range Exper. Stat. Gen. Tech. Report RM-254. 184 pp.
- Barash, D. P. 1971. Cooperative hunting in the lynx. J. Mammal. 52:480.
- Chapman, J. A., and G. A. Feldhamer, editors. 1982. Wild mammals of North America: biology, management, and economics. Johns Hopkins University Press, Baltimore, Maryland.
- Clark, T. W., H.A. Harvey, R.D. Dorn, D.L. Genter, and C. Groves (eds). 1989. Rare, sensitive, and threatened species of the greater Yellowstone ecosystem. Northern Rockies Conservation Cooperative, Montana Natural Heritage Program, The Nature Conservancy, and Mountain West Environmental Services. 153 p.
- Cross, James, and Richard P. Weckwerth, 1977, Upland Game Bird (and Fur Survey) Inventory. Wildlife Investigations, Region One. W-130-
R-8, Job No. II-1, July 1, 1976 - June 30, 1977.
- Cross, James, and Richard P. Weckwerth, 1978, Upland Game Bird (and Fur Survey) Inventory. Wildlife Investigations, Region One. W-130-
R-9, Job No. II-1, July 1, 1977 - June 30, 1978.
- Cross, James, and Richard P. Weckwerth, 1983, Upland Game Bird (and Fur Survey) Inventory. Wildlife Investigations, Region One. W-130-
R-14, Job No. II-1, July 1, 1982 - June 30, 1983.
- Flath, Dennis L., 1979, Nongame species of special interest or concern: Mammals, birds, reptiles, amphibians, fishes. January 1979.
- Flathead National Forest. U.S. Forest Service., 1993, Wildlife landscape evaluation, Swan Valley. Draft Report.
- Foresman, K. R. 2001. The wild mammals of Montana. American Society of Mammologists, Special Publication Number 12. Lawrence, KS. 278 pp.
- Haglund, B. 1966. Winter habits of lynx (LYNX LYNX L.) and wolverine (GULO GULO L.) as revealed by tracking in the snow. Viltrevy 4:81-310.
- Hash, Howard S., 1981, Ecology of the bobcat in a coniferous forest environment in western Montana. Statewide Wildlife Research. Furbearing Mammal Studies. W-120-R-12(5894) II FB-2.0 1. September 1, 1981.
- Hoffmann, R. S. and D. L. Pattie. 1968. A guide to Montana mammals: identification, habitat, distribution, and abundance. University of Montana, Missoula. 133 pp.
- Hoffmann, R.S., P.L. Wright, and F.E. Newby. 1969. Distribution of some mammals in Montana. I. Mammals other than bats. Journal of Mammalogy 50(3): 579-604.
- Jones, J. K., D. M. Armstrong, R. S. Hoffmann and C. Jones. 1983. Mammals of the northern Great Plains. University of Nebraska Press, Lincoln. 379 pp.
- Jones, J. K., Jr., R. S. Hoffman, D. W. Rice, C. Jones, R. J. Baker, and M. D. Engstrom. 1992. Revised checklist of North American mammals north of Mexico, 1991. Occasional Papers, The Museum, Texas Tech University, 146:1-23.
- Maj, M., and E. O. Garten. 1994. Fisher, lynx, wolverine: Summary of distribution information. Pp. 169-175. IN: Ruggiero, L. F., K. B. Aubry, S. W. Buskirk, L. J. Lyon, amd W. J. Zielinski (eds.), The scientific basis for conserving forest carnivores, American marten, fisher, lynx, and wolverine in the western United States. U.S.D.A, Forest Serv. Rocky Mountain Forest and Range Exper. Stat. Gen. Tech. Report RM-254. 184 pp.
- MOWAT, E. L., 1961, GROWTH AFTER PARTIAL CUTTING OF PONDEROSA PINE ON PERMANENT SAMPLE PLOTS IN EASTERN OREGON
- Nellis, C.H. and L.B. Keith. 1968. Hunting activities and success of lynxes in Alberta. J. Wildl. Manage. 32:718-722.
- Newby, F. E. 1959. The lynx - a furbearer. Montana Wildlife. June: 19-21.
- Parker, G.R., J.W. Maxwell, L.D. Morton and G.E.J. Smith. 1983. The ecology of the lynx (Lynx canadensis) on Cape Breton Island, Can. J. Zool. 61:770-785.
- Peterson, Joel, and Michael R. Frisina, 1985, II Upland Game Bird Survey and Inventory, Region Three, Game Birds and Fur (Small Game) Survey and Inventory. Statewide Wildlife Survey and Inventory. W-130-
R-16, Job No. II-3, July 1, 1984 - June 30, 1985.
- Peterson, Joel, and Michael R. Frisina, 1986, II Upland Game Bird Survey and Inventory, Region Three, Game Birds and Fur (Small Game) Survey and Inventory. Statewide Wildlife Survey and Inventory. W-130-
R-17, Job No. II-3, July 1, 1985 - June 30, 1986.
- Peterson, Joel, and Michael R. Frisina, 1987, II Upland Game Bird and Inventory, Region Three, Game Birds and Fur (Small Game) Survey and Inventory. Statewide Wildlife Survey and Inventory. W-130-
R-18, Job No. II-3, July 1, 1986 - June 30, 1987.
- Poole, K. G. 1995. Spatial organization of a lynx population. Canadian Journal of Zoology 73:632-641.
- Reichel, J. D., D. L. Genter and E. Atkinson. 1992. Sensitive animal species in the Elkhorn and Big Belt Mountains of the Helena National Forest. Unpublished report to the Helena National Forest. Montana Natural Heritage Program, Helena. 158 pp.
- Reid, F. 2006. Peterson Field Guide to Mammals of North America, 4th Edition. Houghton Mifflin Company: Boston and New York, 608 pp.
- Rust, H. J. 1946. Mammals of northern Idaho. J. Mammal. 27(4): 308-327.
- Smith, Drew, 1984, Ecology of the bobcat in a coniferous forest environment in western Montana (Habitat use, home range and movements of bobcats in western Montana). Statewide Wildlife Research. Furbearing Mammal Studies. W-120-R-14 and 15 III FB-2.0 1. April 30, 1984.
- Thompson, L.S. 1982. Distribution of Montana amphibians, reptiles, and mammals. Bozeman: Montana Audubon Council. 24 pp.
- Tumlison, R. 1987. Felis lynx. Mamm. Species 269:1-8.
- Tumlison, R.. 1987. Lynx canadensis. American Society of Mammalogists, Lawrence, KS. Mammalian Species No. 269:1-8.
- U.S. Fish and Wildlife Service (USFWS). 24 March 2000. Determination of threatened status for the contiguous U.S. distinct population segment of the Canada lynx and related rule. Federal Register 65(58): 16052-16086.
- U.S. Fish and Wildlife Service (USFWS). 8 July 1998. Proposal to list the contiguous United States distinct population segment of the Canada lynx as a threatened species; and the captive population of Canada lynx within the coterminous United States (lower 48 states) as threatened due to similarity of appearance, with a special rule. Federal Register 63:36994-37013.
- U.S. Forest Service, et al. 1993. Draft supplemental environmental impact statement on management of habitat for late-successional and old-growth forest related species within the range of the northern spotted owl. Published separately is Appendix A: Forest Ecosystem Management Assessment Team. 1993. Forest ecosystem management: an ecological, economic, and social assessment (FEMAT Report).
- U.S. Forest Service, Kootenai National Forest. Montana Dept. of State Lands., 1978?, Final Environmental Impact Statement. Proposed Plan of Mining and Reclamation. Troy Project, Asarco, Inc., Lincoln County, Montana. Vol. III.
- USDI National Park Service., 2000, Bison Management for the State of Montana and Yellowstone National Park. Final Environmental Impact Statement for the Interagency Bison Management Plan for the State of Montana and Yellowstone National Park. Vol. I. August 2000.
- Westmoreland Resources, Inc., Hardin, MT., 1983, 1980 Wildlife Monitoring Report. 12/21/79-12/20-80.
- Wilson, D. E., and D. M. Reeder (editors). 1993. Mammal Species of the World: a Taxonomic and Geographic Reference. Second Edition. Smithsonian Institution Press, Washington, DC. xviii + 1206 pp.