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

Horned Lark In Northern Rockies

All regionsNorthern RockiesGrassland birds

Horned Lark in Northern Rockies has declined: down 31% on the route-weighted index since 1970.

-31%Since 1970
137Routes In Region
56Years

Notable Signals

No notable trend signals for Horned Lark in Northern Rockies. See the full index history below.

Forecast

If the recent trend holds, Horned Lark in Northern Rockies is projected to fall about 43% by 2029 — from 20 in 2024 to a central estimate of 11 (95% range 0.00–25). A 5-year backtest shows a typical error of ±24.1%, with 100% of held-out values landing inside the 95% band.

-43%Change by 2029
11Projected 2029 index
0.00–2595% range
±24.1%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
2025120.0026
2026120.0025
2027120.0025
2028120.0025
2029110.0025

Routes In Northern Rockies

Routes recording Horned Lark in Northern Rockies.
Malheur Res.OREGON2712023
Bear CreekWYOMING1892024
Black Rock 2WYOMING1752024
Patrick DrawWYOMING1741980
Flamin GorgeWYOMING1722024
Black RockWYOMING1672001
Patrick Draw 6WYOMING1652024
BairoilWYOMING1382024
DiamondvilleWYOMING1361982
Patrick Draw 5WYOMING1332009
Gas HillsWYOMING1192012
Neponset ResUTAH1182018
HarmonyWYOMING1172023
WamsutterWYOMING1112024
Rock RiverWYOMING1032022
FarsonWYOMING942024
OttoWYOMING932024
Seedskadee 2WYOMING922024
Crane CreekIDAHO892019
MckinnonWYOMING881986
Patrick Draw 2WYOMING841983
Elk HornWYOMING772018
FrannieWYOMING772024
WorlandWYOMING772024
Patrick Draw 4WYOMING742002

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