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

White-throated Swift In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestAerial insectivores

White-throated Swift in Northern Pacific Rainforest has collapsed: down 76% on the route-weighted index since 1981.

-76%Since 1981
7Routes In Region
22Years

Notable Signals

long arc declinecomputed index

White-throated Swift has collapsed in Northern Pacific Rainforest: down 76% on the route-weighted index since 1981.

Forecast

If the recent trend holds, White-throated Swift in Northern Pacific Rainforest is projected to stay roughly flat through 2028, near 0.01 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±112.1%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2028
0.01Projected 2028 index
0.00–0.1095% range
±112.1%Backtest error
19752028
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
20240.020.000.10
20250.010.000.10
20260.010.000.10
20270.010.000.10
20280.010.000.10

Routes In Northern Pacific Rainforest

Routes recording White-throated Swift in Northern Pacific Rainforest.
LongvaleCALIFORNIA32023
AlderpointCALIFORNIA32011
HolmesCALIFORNIA22022
Shasta LakeCALIFORNIA12004
Mt ShastaCALIFORNIA11990
LaytonvilleCALIFORNIA11985
Bodega BayCALIFORNIA11987

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