BirdAnalyst
Species · BCR 11 · BBS 2025 Release · 1966–2024

Lark Bunting In Prairie Potholes

All regionsPrairie PotholesGrassland birds

Lark Bunting in Prairie Potholes has collapsed: down 89% on the route-weighted index since 1969.

-89%Since 1969
74Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Lark Bunting has collapsed in Prairie Potholes: down 89% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Lark Bunting in Prairie Potholes is projected to fall about 100% by 2029 — from 6.5 in 2024 to a central estimate of 0.00 (95% range 0.00–21). A 5-year backtest shows a typical error of ±101.6%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–2195% range
±101.6%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
20250.000.0021
20260.000.0021
20270.000.0021
20280.000.0021
20290.000.0021

Routes In Prairie Potholes

Routes recording Lark Bunting in Prairie Potholes.
MaltaMONTANA1462024
Ester LakeMONTANA1162024
ChinookMONTANA582024
SacoMONTANA562024
ForbesSOUTH-DAKOTA531984
ParshallNORTH-DAKOTA492006
WestbyMONTANA392016
Sheyenne LkNORTH-DAKOTA391993
CondeSOUTH-DAKOTA381984
GlentanaMONTANA302024
GlasgowMONTANA292024
MontpelierNORTH-DAKOTA281993
HarlemMONTANA272021
BuchananNORTH-DAKOTA251992
Lake GeorgeNORTH-DAKOTA242006
TrippSOUTH-DAKOTA241988
OswegoMONTANA142024
GormanSOUTH-DAKOTA102007
WilmotSOUTH-DAKOTA81970
HowardSOUTH-DAKOTA61988
White LakeSOUTH-DAKOTA62000
SunburstMONTANA51993
RedstoneMONTANA52024
Sun RiverMONTANA42015
LambertMONTANA42024

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