BirdAnalyst
Species · BCR 17 · BBS 2025 Release · 1966–2024

Horned Lark In Badlands and Prairies

All regionsBadlands and PrairiesGrassland birds

Horned Lark in Badlands and Prairies has fallen sharply: down 56% on the route-weighted index since 1969.

-56%Since 1969
125Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Horned Lark has fallen sharply in Badlands and Prairies: down 56% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Horned Lark in Badlands and Prairies is projected to fall about 52% by 2029 — from 27 in 2024 to a central estimate of 13 (95% range 0.00–33). A 5-year backtest shows a typical error of ±34.7%, with 100% of held-out values landing inside the 95% band.

-52%Change by 2029
13Projected 2029 index
0.00–3395% range
±34.7%Backtest error
19672029
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
2025160.0037
2026150.0036
2027140.0035
2028140.0034
2029130.0033

Routes In Badlands and Prairies

Routes recording Horned Lark in Badlands and Prairies.
Dinosaurs H.M.MONTANA2792024
CircleMONTANA2162023
Coleman CouleeMONTANA1882023
ClarkelenWYOMING1441978
MeadowdaleWYOMING1361995
NatronaWYOMING1341992
DickinsonNORTH-DAKOTA1312024
Pine TreeWYOMING1161995
Glen UllinNORTH-DAKOTA912022
JordanMONTANA892024
BentleyNORTH-DAKOTA812024
NewcastleWYOMING812024
Wheat BasinMONTANA772024
Ft YatesNORTH-DAKOTA722004
RoundupMONTANA712024
GolvaNORTH-DAKOTA682023
Winifred 2MONTANA642024
Maynard CouleeMONTANA572024
Caballa CrkWYOMING572023
WebsterMONTANA552024
Cedar CreekNORTH-DAKOTA542022
UptonWYOMING542024
Teapot DomeWYOMING531989
HighlightWYOMING522007
CarsonNORTH-DAKOTA512024

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