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Species · Wyoming · BBS 2025 Release · 1966–2024

Killdeer Population Trend in Wyoming

All statesShorebirds

Killdeer in Wyoming has edged down: down 21% on the route-weighted index since 1970.

-21%Since 1970TrendPercent 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 →
129Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
56YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Killdeer Trends in WyomingNotable 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 Killdeer in Wyoming. See the full index history below.

Killdeer Population Forecast in Wyoming

If the recent trend holds, Killdeer in Wyoming is projected to fall about 16% by 2029 — from 3.6 in 2024 to a central estimate of 3.0 (95% range 0.00–6.3). A 5-year backtest shows a typical error of ±39.6%, with 100% of held-out values landing inside the 95% band.

-16%Change by 2029TrendPercent 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 →
3.0Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–6.395% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±39.6%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Killdeer in Wyoming is projected to fall about 16% by 2029 — from 3.6 in 2024 to a central estimate of 3.0 (95% range 0.00–6.3). A 5-year backtest shows a typical error of ±39.6%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20253.30.006.6
20263.20.006.5
20273.10.006.4
20283.10.006.4
20293.00.006.3

Killdeer Survey Routes in Wyoming

Routes recording Killdeer in Wyoming.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Highlight2520071980
Dwyer2020191994
Green River2019841977
Patrick Draw1919801973
Seedskadee 21820242024
Cody1420241983
Clarkelen1419781968
Yoder1320241968
Piney1319901980
Lingle1220241980
Natrona1119921968
Kaycee1120242022
Rozet1120231991
Seely 21120242001
Arvada1020241982
Upton1020241987
Nowood920241988
Bill920181974
Pathfinder920241982
Walcott920241982
Thunder Basin920242011
Basin820241970
Newcastle820241988
Wyarno720241974
Midvale720241974

Killdeer Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.