BirdAnalyst
Species · BCR 5 · BBS 2025 Release · 1966–2024

Great Blue Heron In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestWetland birds

Great Blue Heron in Northern Pacific Rainforest has declined: down 47% on the route-weighted index since 1970.

-47%Since 1970
118Routes In Region
56Years

Notable Signals

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

Forecast

If the recent trend holds, Great Blue Heron in Northern Pacific Rainforest is projected to fall about 44% by 2029 — from 0.67 in 2024 to a central estimate of 0.37 (95% range 0.00–0.97). A 5-year backtest shows a typical error of ±25.3%, with 100% of held-out values landing inside the 95% band.

-44%Change by 2029
0.37Projected 2029 index
0.00–0.9795% range
±25.3%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
20250.450.001.1
20260.430.001.0
20270.410.001.0
20280.390.000.99
20290.370.000.97

Routes In Northern Pacific Rainforest

Routes recording Great Blue Heron in Northern Pacific Rainforest.
YrekaCALIFORNIA72019
GlasgowOREGON72024
IlwacoWASHINGTON72024
SvensenOREGON61992
SkagwayALASKA52024
Horse CreekCALIFORNIA52019
Crescent CtyCALIFORNIA42022
Redwood N.P.CALIFORNIA42010
DerbyOREGON41993
YakutatALASKA32003
Mitkof IsleALASKA32008
Bodega BayCALIFORNIA32021
UmpquaOREGON32023
WedderburnOREGON32024
Elk LakeOREGON32019
Emigrant LkOREGON32001
IssaquahWASHINGTON31984
Juneau AltALASKA21986
KetchikanALASKA22022
ZaremboALASKA22021
Wrangell (Short)ALASKA21984
HoneydewCALIFORNIA22016
Lonesome RdgCALIFORNIA22014
Friday RidgeCALIFORNIA22021
Redwood N.P. 2CALIFORNIA22012

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