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

Glaucous-winged Gull In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestWetland birds

Glaucous-winged Gull in Northern Pacific Rainforest has fallen sharply: down 53% on the route-weighted index since 1970.

-53%Since 1970
53Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Glaucous-winged Gull has fallen sharply in Northern Pacific Rainforest: down 53% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Glaucous-winged Gull in Northern Pacific Rainforest is projected to rise about 30% by 2029 — from 2.3 in 2024 to a central estimate of 2.9 (95% range 0.00–8.9). A 5-year backtest shows a typical error of ±136.8%, with 100% of held-out values landing inside the 95% band.

+30%Change by 2029
2.9Projected 2029 index
0.00–8.995% range
±136.8%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
20253.10.009.1
20263.00.009.0
20273.00.009.0
20283.00.009.0
20292.90.008.9

Routes In Northern Pacific Rainforest

Routes recording Glaucous-winged Gull in Northern Pacific Rainforest.
Port AngelesWASHINGTON622024
CordovaALASKA212024
YakutatALASKA212024
JuneauALASKA162024
Warm Beach 2WASHINGTON142021
Mitkof IsleALASKA122010
Zimovia StrtALASKA122024
TaholahWASHINGTON122022
SitkaALASKA112024
Warm BeachWASHINGTON112017
MukilteoWASHINGTON112024
SkagwayALASKA102024
NavarroCALIFORNIA101995
SewardALASKA71984
KetchikanALASKA72019
GlasgowOREGON72015
Bay ViewWASHINGTON62017
HainesALASKA42022
Juneau AltALASKA31986
CraigALASKA31991
Copper RiverALASKA32011
Crescent CtyCALIFORNIA32001
IlwacoWASHINGTON32022
Thompson PasALASKA22002
HoonahALASKA22022

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