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

Great Blue Heron In Great Basin

All regionsGreat BasinWetland birds

Great Blue Heron in Great Basin has held roughly steady: up 9% on the route-weighted index since 1970.

+9%Since 1970
148Routes In Region
56Years

Notable Signals

No notable trend signals for Great Blue Heron in Great Basin. See the full index history below.

Forecast

If the recent trend holds, Great Blue Heron in Great Basin is projected to rise about 93% by 2029 — from 0.34 in 2024 to a central estimate of 0.66 (95% range 0.17–1.2). A 5-year backtest shows a typical error of ±82.6%, with 100% of held-out values landing inside the 95% band.

+93%Change by 2029
0.66Projected 2029 index
0.17–1.295% range
±82.6%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
20250.670.171.2
20260.670.171.2
20270.670.171.2
20280.670.171.2
20290.660.171.2

Routes In Great Basin

Routes recording Great Blue Heron in Great Basin.
Iron GateCALIFORNIA242019
Bear RiverUTAH112023
BakerIDAHO82024
PrestonIDAHO62023
Modoc Point 2OREGON62024
OthelloWASHINGTON61991
JosephOREGON52024
DorrisCALIFORNIA42019
Clear Lk ResCALIFORNIA42018
CratersIDAHO41988
Pasadena ValIDAHO42015
BatesIDAHO42019
Fish LakeOREGON42022
Davis LakeOREGON42024
Malheur NwrOREGON41998
YakimaWASHINGTON42024
Crowder FlatCALIFORNIA32017
Cedar HillIDAHO32022
Rye PatchNEVADA31974
GardnervilleNEVADA32006
Ruby Valley 2NEVADA32024
Modoc PointOREGON32018
PrincetonOREGON31985
PromontoryUTAH32024
ReardanWASHINGTON32021

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