BirdAnalyst
Species · BCR 4 · BBS 2025 Release · 1966–2024

Horned Lark In BCR 4

All regionsBCR 4Grassland birds

Horned Lark in BCR 4 has collapsed: down 77% on the route-weighted index since 1986.

-77%Since 1986
5Routes In Region
23Years

Notable Signals

long arc declinecomputed index

Horned Lark has collapsed in BCR 4: down 77% on the route-weighted index since 1986.

Forecast

If the recent trend holds, Horned Lark in BCR 4 is projected to stay roughly flat through 2028, near 0.02 (95% range 0.00–0.27). A 5-year backtest shows a typical error of ±170.2%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2028
0.02Projected 2028 index
0.00–0.2795% range
±170.2%Backtest error
19822028
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
20240.030.000.28
20250.030.000.28
20260.020.000.28
20270.020.000.27
20280.020.000.27

Routes In BCR 4

Routes recording Horned Lark in BCR 4.
Ft. RichrdsnALASKA261998
MaclarenALASKA12007
MonahanALASKA11992
ToklatALASKA12021
SavageALASKA12023

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