BirdAnalyst
Species · Nevada · BBS 2026 Release · 1966–2025

Northern House Wren Population Trend in Nevada

All statesForest birds

Northern House Wren in Nevada has held roughly steady: down 5% on the route-weighted index since 1973.

-5%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 →
29Routes 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 →
39YearsYears 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 39% by 2030 — from 0.48 in 2025 to a central estimate of 0.66 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±996.9%, with 40% of held-out values landing inside the 95% band.

+39%Change by 2030TrendPercent 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 →
0.66Projected 2030 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 →
±996.9%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 39% by 2030 — from 0.48 in 2025 to a central estimate of 0.66 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±996.9%, with 40% of held-out values landing inside the 95% band.19682030
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 →
20260.650.001.5
20270.660.001.5
20280.660.001.5
20290.660.001.5
20300.660.001.5

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
Carson River920022001
Comins Lake520162005
Humboldt Nf 2520252024
Sheldon Nwr420101992
Gardnerville420121992
Sand Pass320191992
Jean Lake320011973
Hawthorne320011997
Ranchogrande220192008
Humboldt Nf220191993
Ruby Valley220011997
Nixon220241987
Bald Mtn.220251992
Gardnerville 2220252013
Piute Mdws120212021
Dinner Sta119931968
Fish Creek120012001
Mizpah120162016
Austin120172008
Toiyabe Nf120071992
Ruby Valley 2120242016
Ash Meadows120222022
Virgin Creek120151995
Meadow Vally120252025

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 2026-08-14.