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Wood Duck -
Native Species Global Rank
Agency Status USFWS
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Small to medium sized duck with crested head, broad wings, and large, rectangularly shaped tail. Sexes dimorphic in Alternate plumage. Male has distinctive facial pattern (iridescent green and purple head; white throat with fingerlike extensions onto cheek and neck; red eye; long green, purple, and white crest; and burgundy breast) and overall colorful plumage. The brownish to gray female Wood Duck is distinguished by a pronounced white patch around the eye, white throat, and gray crest. Males in Basic plumage and juveniles resemble adult females (Hepp and Bellrose 1995).
For a comprehensive review of the conservation status, habitat use, and ecology of this and other Montana bird species, please see
Marks et al. 2016, Birds of Montana.
Western Hemisphere Range
Observations in Montana Natural Heritage Program Database
Number of Observations:
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
SUMMER (Feb 16 - Dec 14)
Direct Evidence of Breeding
Indirect Evidence of Breeding
No Evidence of Breeding
WINTER (Dec 15 - Feb 15)
Not Regularly Observed
(Observations spanning multiple months or years are excluded from time charts)
Normal migration periods statewide are from early April to early May and from September 14 to November 7 (Davis 1961, Skaar 1969).
Wide variety of habitats: creeks, rivers, overflow, bottomlands, swamps, marshes, beaver and farm ponds (Hepp and Bellrose 1995). In the Bozeman area it is found most of the time in quiet sloughs in mature cottonwood forests (Skaar 1969).
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 (common or occasional) 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 2012, 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 observation 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 listed as associated with 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 listed as associated with an ecological system if there was no support in the literature for use of structural characteristics in an ecological system,
point observations were associated with that system.
Common versus occasional association with an ecological system was assigned based on the degree to which the structural characteristics of an ecological system matched the preferred structural habitat characteristics for each species as represented in scientific 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 assignment of common versus occasional association.
If you have any questions or comments on species associations with ecological systems, please contact the Montana Natural Heritage Program's Senior Zoologist.
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:
) 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. 2012. Mammals of Montana. Second edition. Mountain Press Publishing, Missoula, Montana. 429 pp.
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
Wetland and Riparian Systems
Occasionally Associated with these Ecological Systems
Forest and Woodland Systems
Wetland and Riparian Systems
The Wood Duck is an omnivore with a broad diet. Seeds, fruits and aquatic and terrestrial invertebrates are main foods taken (Hepp and Bellrose 1995).
A cavity nester, but does not excavate the cavity; instead uses preformed cavities. Eggs are elliptical to subelliptical, vary in color from white or creamy white to dark tan and are fairly glossy (Hepp and Bellrose 1995). Nesting occurs from late May to early July (Davis 1961). Small chicks were seen near Three Forks on June 26, and a single chick near Missoula on June 23 (Skaar 1969), representing the earliest chick records.
Literature Cited Above
Legend: View Online Publication Davis, C.V. 1961. A distributional study of the birds of Montana. Ph.D. Dissertation. Corvallis, OR: Oregon State University. 462 p. Hepp, G.R. and F.C. Bellrose. 1995. Wood Duck ( Aix sponsa). Species Account Number 169. The Birds of North America Online (A. Poole, Ed.). Ithaca, NY: Cornell Laboratory of Ornithology; Retrieved 3/25/2008 from The Birds of North America Online database Marks, J.S., P. Hendricks, and D. Casey. 2016. Birds of Montana. Arrington, VA. Buteo Books. 659 pages. Skaar, P.D. 1969. Birds of the Bozeman latilong: a compilation of data concerning the birds which occur between 45 and 46 N. latitude and 111 and 112 W. longitude, with current lists for Idaho, Montana, Wyoming, impinging Montana counties and Yellowstone National Park. Bozeman, MT. 132 p. Additional References
Legend: View Online Publication Do you know of a citation we're missing? [WWPC] Washington Water Power Company. 1995. 1994 wildlife report Noxon Rapids and Cabinet Gorge Reservoirs. Washington Water Power Company. Spokane, WA. American Ornithologists’ Union [AOU]. 1998. Check-list of North American birds, 7th edition. American Ornithologists’ Union, Washington, D.C. 829 p. Banks, R.C. and P.F. Springer. 1994. A century of population trends of waterfowl in western North America. Studies in Avian Biology, No. 15: 134-146. Bramblett, R.G., and A.V. Zale. 2002. Montana Prairie Riparian Native Species Report. Montana Cooperative Fishery Research Unit, Montana State University - Bozeman. Burleigh, T.D. 1972. Birds of Idaho. The Caxton Printers, Ltd., Caldwell, ID. 467 pp. Decker Coal Co., 1981, Wildlife survey. July 7, 1981. In North Decker 5-Year Permit Application. Vol. III. Rule 26.4.304(12-14). Decker Coal Company., 1979?, West Decker 5 Year Permit: Avian research and mitigation. In Decker Coal Company West Pit Permit. Vol. 3. 26.4.304(10-11), 305, 306, and 307. Updated Rules Rewrite, July 1, 1991. Dickson, D.C. 1991. Systematic wildlife observations on the Blackfoot-Clearwater Wildlife Management Area. Montana Department of Fish, Wildlife and Parks. Missoula, MT. 14 pp. plus appendices and photographs. Dugger, K.M., and L.H. Fredrickson. 1992. Life history and habitat needs of the wood duck. Fish and Wildlife Leaflet 13.1.6. U.S. Fish and Wildlife Service. 8 p. Ehrlich, P., D. Dobkin, and D. Wheye. 1988. The birder’s handbook: a field guide to the natural history of North American birds. Simon and Schuster Inc. New York. 785 pp. Gniadek, S. 1983. Southwest Glendive Wildlife Baseline Inventory. Miles City, Mont: Bureau of Land Management, Miles City District Office. 56 pp with appendices. Hays, R., R.L. Eng, and C.V. Davis (preparers). 1984. A list of Montana birds. Helena, MT: MT Dept. of Fish, Wildlife & Parks. Johnsgard, P.A. 1975. Waterfowl of North America. Indiana University Press, Bloomington. Johnsgard, P.A. 1979. Birds of the Great Plains: breeding species and their distribution. University of Nebraska Press, Lincoln. 539 pp. Johnsgard, P.A. 1992. Birds of the Rocky Mountains with particular reference to national parks in the northern Rocky Mountain region. Lincoln: University of Nebraska Press. xi + 504 pp. Joslin, Gayle, and Heidi B. Youmans. 1999. Effects of recreation on Rocky Mountain wildlife: a review for Montana. [Montana]: Montana Chapter of the Wildlife Society. Land & Water Consulting, Inc. 2002. Montana Dept. of Transportation Wetland Mitigation Monitoring Report. Year 2001: Creston Site, Creston, Montana. Project No. 130091.007. July 2002. In 2001 Wetland Mitigation Monitoring Reports, Vol. I. Land & Water Consulting, Inc., Missoula, MT., 2002, Montana Dept. of Transportation Wetland Mitigation Monitoring Report, Year 2001: Musgrave Lake, Montana. Proj. No. 130091.019. July 2002. In 2001 Wetland Mitigation Monitoring Reports, Vol. II. Land & Water Consulting, Inc., Missoula, MT., 2002, Montana Dept. of Transportation Wetland Mitigation Monitoring Report, Year 2002: Roundup Wetland, Roundup, Montana. Proj. No. 130091.031. February 2003. In 2002 Wetland Mitigation Monitoring Reports, Vol. II. Lenard, S., J. Carlson, J. Ellis, C. Jones, and C. Tilly. 2003. P. D. Skaar's Montana bird distribution, 6th edition. Montana Audubon, Helena, MT. 144 pp. Merendino, M.T., G.B. McCullough, and N.R. North. 1995. Wetland availability and use by breeding waterfowl in southern Ontario. J. Wildl. Manage. 59(3): 527-532. Montana Bird Distribution Committee. 2012. P.D. Skaar's Montana bird distribution. 7th Edition. Montana Audubon, Helena, Montana. 208 pp. + foldout map. MT Fish, Wildlife & Parks. No date. Blackfoot-Clearwater Wildlife Management Area checklist. Northrop, Devine and Tarbell, Inc. 1995. Cabinet Gorge and Noxon Rapids Hydroelectric Developments, 1994 Wetland Mapping and Assessment Study, Volume I of II. 27 pp. plus appendices. Oechsli, L.M. 2000. Ex-urban development in the Rocky Mountain West: consequences for native vegetation, wildlife diversity, and land-use planning in Big Sky, Montana. M.Sc. Thesis. Montana State University, Bozeman. 73 p. Palmer, R.S. 1962. Handbook of North American birds. Volume 1. Loons through flamingos. Yale University Press, New Haven. 567 pp. Prellwitz, D. M., J. R. Little, L. R. Rau, and C. J. Hoff. 1995. Wood Duck population expansion in northern Montana. Prairie Naturalist 27(1):27-32. Rhodes, O.E., Jr., L.M. Smith and M.H. Smith. 1991. Conservation and genetic resources in waterfowl. Trans. N. Amer. Wildl. & Nat. Res. Conf. 56:462-472. Sater, S. 2022. The insects of Sevenmile Creek, a pictorial guide to their diversity and ecology. Undergraduate Thesis. Helena, MT: Carroll College. 242 p. Sibley, D. 2014. The Sibley guide to birds. Alfred A. Knopf, New York, NY. 598 pp. Skaar, P. D., D. L. Flath, and L. S. Thompson. 1985. Montana bird distribution. Montana Academy of Sciences Monograph 3(44): ii-69. Stewart, R.E. and H.A. Kantrud. 1972. Population estimates of breeding birds in North Dakota. The Auk 89(4):766-788. Swan River National Wildlife Refuge. 1982. Birds of the Swan River NWR. Kalispell, MT: NW MT Fish and Wildlife Center pamphlet. U.S. Forest Service. 1991. Forest and rangeland birds of the United States: Natural history and habitat use. U.S. Department of Agriculture, Forest Service Agricultural Handbook 688. 625 pages. Waldt, R. 1995. The Pine Butte Swamp Preserve bird list. Choteau, MT: The Nature Conservancy. Updated August 1995. Watts, C.R. and L.C. Eichhorn. 1981. Changes in the birds of central Montana. Proceedings of the Montana Academy of Sciences 40:31-40. Wetlands West, Inc., Bozeman, MT., and Land & Water Consulting, Inc., Missoula, MT., 2002, Montana Dept. of Transportation Wetland Mitigation Monitoring Report, Year 2001: Stillwater River, Absarokee, Montana. Proj. No. 130091.032. July 2002. In 2001 Wetland Mitigation Monitoring Reports, Vol. II. Wetlands West, Inc., Bozeman, MT., and Land & Water Consulting, Inc., Missoula, MT., 2002, Montana Dept. of Transportation Wetland Mitigation Monitoring Report, Year 2001: Vince Ames, Red Lodge, Montana. Proj. No. 130091.033. July 2002. In 2001 Wetland Mitigation Monitoring Reports, Vol. II. Web Search Engines for Articles on "Wood Duck"
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