Species · BBS 2026 Release · 1966–2025

American Coot Population Analysis

RallidaeWetland birdsFulica americana

American Coot has edged up: up 15% on the route-weighted index since 1968.

About the American Coot

The American Coot (Fulica americana) is a North American member of the Rails, Gallinules & Coots (Rallidae). In this analysis it is grouped with the wetland birds.

Size
6–19 in long (15–48 cm) — a marsh-dwelling waterbird (typical for the family)
Habitat
Marshes, ponds, lakeshores and other freshwater wetlands.
Diet
Aquatic invertebrates, small fish, frogs and plant matter.
Range
Recorded on 920 Breeding Bird Survey routes across 39 states, most concentrated in the Great Basin.
Family
Rallidae · Wetland birds

Notable American Coot TrendsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for American Coot. See the full index history below.

American Coot Population Forecast

If the recent trend holds, American Coot is projected to rise about 154% by 2030 — from 0.28 in 2025 to a central estimate of 0.71 (95% range 0.09–1.3). A 5-year backtest shows a typical error of ±126.5%, with 100% of held-out values landing inside the 95% band.

If the recent trend holds, American Coot is projected to rise about 154% by 2030 — from 0.28 in 2025 to a central estimate of 0.71 (95% range 0.09–1.3). A 5-year backtest shows a typical error of ±126.5%, with 100% of held-out values landing inside the 95% band.19662030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20260.700.081.3
20270.710.081.3
20280.710.081.3
20290.710.091.3
20300.710.091.3

Where the American Coot Is Detected

BBS routes recording American Coot, sized by most recent count.

American Coot Population Trend by State

American Coot population trend by state.
TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Alabama-72%197014
Arizona-20%197420
Arkansasinsufficient datan/a5
California+16%1970125
Colorado-38%197053
Connecticutinsufficient datan/a1
Florida-93%196827
Georgiainsufficient datan/a1
Idaho-83%197030
Illinois-96%197116
Indiana-92%19816
Iowa-90%197211
Kansas-93%196910
Kentuckyinsufficient datan/a3
Louisiana-99%197112
Michigan-60%197510
Minnesota-66%196949
Mississippiinsufficient datan/a5
Missouriinsufficient datan/a2
Montana+107%197055
Nebraska-63%197026
Nevada+269%197019
New Mexico-85%197422
New Yorkinsufficient datan/a8
North Carolinainsufficient datan/a1
North Dakota-51%196945
Ohioinsufficient datan/a5
Oklahoma+384%19799
Oregon+759%197143
Pennsylvaniainsufficient datan/a1
South Dakota-71%196946
Tennesseeinsufficient datan/a4
Texas-48%196973
Utah-30%197338
Vermontinsufficient datan/a1
Washington-52%197039
West Virginiainsufficient datan/a1
Wisconsin-88%196928
Wyoming+30%197256

American Coot Population Trend by Region

Bird Conservation Regions are the ecological unit for trends.

American Coot population trend by Bird Conservation Region.
TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Northern Pacific Rainforest-75%197325
Great Basin+68%1970122
Northern Rockies+104%197078
Prairie Potholes-65%1969101
Boreal Hardwood Transition+34%197314
Sierra Nevada-63%19748
Southern Rockies / Colorado Plateau+4%197070
Badlands and Prairies-52%196978
Shortgrass Prairie-44%196947
Central Mixed Grass Prairie-81%196932
Oaks and Prairies-56%197412
Eastern Tallgrass Prairie-94%197030
Prairie Hardwood Transition-89%196952
Central Hardwoods-41%19739
Southeastern Coastal Plain-79%196920
Appalachian Mountains-31%197112
Peninsular Florida-92%196818
Coastal California-58%197078
Sonoran and Mojave Deserts-49%197528
Sierra Madre Occidental-75%19745
Chihuahuan Desert-83%19829
Tamaulipan Brushlands-34%197011
Gulf Coastal Prairie-87%197133

American Coot Conservation Status

Our route-weighted index shows it up about 15% since 1968.

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. Trend is a route-weighted relative-abundance index, not an absolute population.