BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Olive-sided Flycatcher In Great Basin

All regionsGreat BasinAerial insectivores

Olive-sided Flycatcher in Great Basin has declined: down 36% on the route-weighted index since 1970.

-36%Since 1970
86Routes In Region
56Years

Notable Signals

No notable trend signals for Olive-sided Flycatcher in Great Basin. See the full index history below.

Forecast

If the recent trend holds, Olive-sided Flycatcher in Great Basin is projected to fall about 36% by 2029 — from 0.94 in 2024 to a central estimate of 0.60 (95% range 0.10–1.1). A 5-year backtest shows a typical error of ±27.8%, with 100% of held-out values landing inside the 95% band.

-36%Change by 2029
0.60Projected 2029 index
0.10–1.195% range
±27.8%Backtest error
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 index95% low95% high
20250.650.141.2
20260.640.131.1
20270.630.121.1
20280.610.111.1
20290.600.101.1

Routes In Great Basin

Routes recording Olive-sided Flycatcher in Great Basin.
MacdoelCALIFORNIA232019
Davis LakeOREGON182024
PauninaOREGON152024
PaisleyOREGON132024
SistersOREGON112024
ChinchaloOREGON112024
BartleCALIFORNIA82021
LakeviewOREGON72024
RimrockWASHINGTON72024
Wizard FallsOREGON62024
Dell SpringOREGON51999
Modoc Point 2OREGON52024
SnowdenWASHINGTON52024
Clear Lk ResCALIFORNIA42017
BlyOREGON42001
Bly 2OREGON42024
Bald Mtn.OREGON42024
NewhalemWASHINGTON42024
TionestaCALIFORNIA32021
Mt HoodOREGON32024
Lapham Res.OREGON32024
RonaldWASHINGTON32024
MazamaWASHINGTON32022
YakimaWASHINGTON31996
HackamoreCALIFORNIA22010

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