BirdAnalyst
Species · BCR 16 · BBS 2026 Release · 1966–2025

Olive-sided Flycatcher In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauAerial insectivores

Olive-sided Flycatcher in Southern Rockies / Colorado Plateau has held roughly steady: down 8% on the route-weighted index since 1970.

-8%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 →
134Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 Olive-sided Flycatcher in Southern Rockies / Colorado Plateau. See the full index history below.

Olive-sided Flycatcher In Southern Rockies / Colorado Plateau Population Forecast

If the recent trend holds, Olive-sided Flycatcher in Southern Rockies / Colorado Plateau is projected to rise about 23% by 2030 — from 0.56 in 2025 to a central estimate of 0.69 (95% range 0.21–1.2). A 5-year backtest shows a typical error of ±44.2%, with 100% of held-out values landing inside the 95% band.

+23%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 →
0.69Projected 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 →
0.21–1.295% 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 →
±44.2%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, Olive-sided Flycatcher in Southern Rockies / Colorado Plateau is projected to rise about 23% by 2030 — from 0.56 in 2025 to a central estimate of 0.69 (95% range 0.21–1.2). A 5-year backtest shows a typical error of ±44.2%, with 100% 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 →
20260.680.201.2
20270.680.201.2
20280.680.211.2
20290.690.211.2
20300.690.211.2

Routes In Southern Rockies / Colorado Plateau

Routes recording Olive-sided Flycatcher in Southern Rockies / Colorado Plateau.
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 →
SawmillARIZONA141992
DoloresCOLORADO91969
Stillwater Pass 2COLORADO92025
Stillwater PassCOLORADO72009
Ryan ParkWYOMING72025
Ragged Mtn.COLORADO62025
ClevelandUTAH61992
Comanche PkCOLORADO52024
Heeney 2COLORADO52025
Lost LakeCOLORADO42025
Blackhead PkCOLORADO42014
TincupCOLORADO42025
Angel Fire 2NEW-MEXICO42025
SoapstoneUTAH42025
WarbonnetWYOMING42025
Cheesman LkCOLORADO32025
Dolores RivCOLORADO32024
Lake City 2COLORADO32025
PowderhornCOLORADO32023
South ForkCOLORADO32024
RadiumCOLORADO32012
Cochetopa PassCOLORADO32024
HeeneyCOLORADO32019
Gold Hill 2COLORADO32023
Uintah NfUTAH31994

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.