American Coot - Fulica americana
A dark hen-like bird with a blackish head and neck, slate body (paler in juveniles), and a frontal shield that usually is small and maroon or dark brown (may become bulbous at peak of breeding season; a few have a white frontal shield); undertail coverts white on the sides, black in the middle; white trailing edge on wings; whitish bill; large feet with lobed toes. An awkward and often clumsy flier, the American Coot requires long running takeoffs across the water's surface to become airborne (Brisbin and Mowbray 2002).
Differs from gallinules in having lobed toes and lacking red on the bill; lacks the white line on the sides of the Common Moorhen. Differs from Caribbean Coot in having a smaller forehead shield that is reddish-brown instead of white or white tinged with yellow (some American Coots have an extensively white forehead shield). Differs from Eurasian Coot in being slightly smaller and paler and having the undertail coverts black and white rather than all black; also the forehead shield is reddish-brown instead of all white.
Western Hemisphere Range
Summary of Observations Submitted for Montana
Number of Observations:
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Map Help and Descriptions
(direct evidence "B")
(indirect evidence "b")
No evidence of Breeding
(regular observations "W")
(at least one obs. "w")
(Observations spanning multiple months or years are excluded from time charts)
Bozeman migration: 3/28 to 6/1 and 9/5 to 11/25; peak on 4/25 and 10/1 (Skaar 1969). State peaks 3rd week April and 3rd week September (Davis 1961).
Summer birds prefer marshy borders of ponds (Skaar 1969). The American Coot may be found in almost any of a broad variety of wetlands, including freshwater lakes, ponds, marshes, roadside ditches, and industrial-waste impoundments, as well as in coastal marine habitats. Two features generally characterize all bodies of water where coots breed: (1) heavy stands of emergent aquatic vegetation along at least some portion of the shoreline; and (2) at least some depth of standing water within those stands of vegetation (Brisbin and Mowbray 2002).
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 email@example.com
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.
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- 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.
The American Coot will consume grains, grasses, and agricultural crops on land. However, it generally forages in or under water, where it is almost exclusively an herbivore (Brisbin and Mowbray 2002).
40,000 seen at Bowdoin in fall, 1956 (Davis 1961). Not seen in Bozeman area in 1888-1890. Its increase in numbers may be due to construction of reservoirs (Skaar 1969).
Nests are built over water on floating platforms and almost always associated with dense stands of living or dead emergent vegetation. Subelliptical eggs in various shades of ground color. Clutch size ranges 8 - 12 eggs (Brisbin and Mowbray 2002). Near Fortine, egg dates range from 5/17 to 7/1. Earliest brood observed was 5/17.
- Additional ReferencesLegend: View WorldCat Record View Online Publication
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- Allen, A. W. 1985. Habitat suitability index models: American coot. U.S. Fish Wildl. Serv. Biol. Rep. 82(10.115). 17 pp.
- American Ornithologists' Union. 1998. Check-list of North American birds. 7th edition. American Ornithologists' Union, Washington, D.C. 829 pp.
- Brisbin, Jr., I. Lehr, and Thomas B. Mowbray. 2002. American Coot (Fulica americana). Species Account Number 697a. 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
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- Palawski, D.U., et al., 1991, Contaminant biomonitoring at the Benton Lake National Wildlife Refuge in 1988.
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