BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

White-faced Ibis In Northern Rockies

All regionsNorthern RockiesWetland birds

White-faced Ibis in Northern Rockies has risen sharply: up 67% on the route-weighted index since 1992.

+67%Since 1992
11Routes In Region
25Years

Notable Signals

long arc increasecomputed index

White-faced Ibis has risen sharply in Northern Rockies: up 67% on the route-weighted index since 1992.

Forecast

If the recent trend holds, White-faced Ibis in Northern Rockies is projected to stay roughly flat through 2029, near 0.30 (95% range 0.00–0.69). A 5-year backtest shows a typical error of ±1238.4%, with 80% of held-out values landing inside the 95% band.

n/aChange by 2029
0.30Projected 2029 index
0.00–0.6995% range
±1238.4%Backtest error
19832029
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
20250.290.000.67
20260.290.000.68
20270.290.000.68
20280.300.000.69
20290.300.000.69

Routes In Northern Rockies

Routes recording White-faced Ibis in Northern Rockies.
Neponset ResUTAH372018
Red RockMONTANA262022
RandolphUTAH122022
Crawford MtsUTAH72017
Carter 2WYOMING72021
SeedskadeeWYOMING31994
LayCOLORADO22001
FontenelleWYOMING22007
BeaverheadMONTANA12024
TensleepWYOMING12009
HarmonyWYOMING12021

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