BirdAnalyst
Species · Nevada · BBS 2025 Release · 1966–2024

Northern House Wren Population Trend in Nevada

All statesForest birds

Northern House Wren in Nevada has declined: down 48% on the route-weighted index since 1973.

-48%Since 1973TrendPercent 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 →
28Routes 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 →
38YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Northern House Wren Trends in NevadaNotable 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 Northern House Wren in Nevada. See the full index history below.

Northern House Wren Population Forecast in Nevada

If the recent trend holds, Northern House Wren in Nevada is projected to rise about 90% by 2029 — from 0.36 in 2024 to a central estimate of 0.68 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±1050.7%, with 40% of held-out values landing inside the 95% band.

+90%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 →
0.68Projected 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 →
0.00–1.595% 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 →
±1050.7%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, Northern House Wren in Nevada is projected to rise about 90% by 2029 — from 0.36 in 2024 to a central estimate of 0.68 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±1050.7%, with 40% 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 →
20250.670.001.5
20260.670.001.5
20270.670.001.5
20280.680.001.5
20290.680.001.5

Northern House Wren Survey Routes in Nevada

Routes recording Northern House Wren in Nevada.
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 →
Jarbidge2320151997
Gardnerville 21620182013
Carson River920022001
Humboldt Nf 2720242024
Comins Lake520162005
Sheldon Nwr420101992
Gardnerville420121992
Sand Pass320191992
Jean Lake320011973
Hawthorne320011997
Ranchogrande220192008
Humboldt Nf220191993
Ruby Valley220011997
Nixon220241987
Piute Mdws120212021
Dinner Sta119931968
Fish Creek120012001
Mizpah120162016
Austin120172008
Toiyabe Nf120071992
Ruby Valley 2120242016
Ash Meadows120222022
Virgin Creek120151995
Dobbin Creek120032003
Willis120041994

Northern House Wren Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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