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

Pied-billed Grebe In Badlands and Prairies

All regionsBadlands and PrairiesWetland birds

Pied-billed Grebe in Badlands and Prairies has collapsed: down 85% on the route-weighted index since 1969.

-85%Since 1969
61Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Pied-billed Grebe has collapsed in Badlands and Prairies: down 85% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Pied-billed Grebe in Badlands and Prairies is projected to fall about 40% by 2029 — from 0.10 in 2024 to a central estimate of 0.06 (95% range 0.00–0.56). A 5-year backtest shows a typical error of ±28.5%, with 100% of held-out values landing inside the 95% band.

-40%Change by 2029
0.06Projected 2029 index
0.00–0.5695% range
±28.5%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
20250.080.000.58
20260.070.000.57
20270.070.000.57
20280.070.000.56
20290.060.000.56

Routes In Badlands and Prairies

Routes recording Pied-billed Grebe in Badlands and Prairies.
AlbionMONTANA42014
LacreekSOUTH-DAKOTA42023
CottonwoodSOUTH-DAKOTA42022
ChamberlainSOUTH-DAKOTA31990
Eagle ButteSOUTH-DAKOTA32015
MarcusSOUTH-DAKOTA32010
White RiverSOUTH-DAKOTA32011
KayceeWYOMING32024
RoyMONTANA22017
SavageMONTANA21980
ForsythMONTANA22019
RockyfordSOUTH-DAKOTA21974
HardingSOUTH-DAKOTA22012
Fort PierreSOUTH-DAKOTA22024
ArdmoreSOUTH-DAKOTA22019
PioneerSOUTH-DAKOTA22001
French CreekSOUTH-DAKOTA22002
WyarnoWYOMING21987
NatronaWYOMING21987
RecluseWYOMING22016
LeroyMONTANA12019
BrusettMONTANA12024
JordanMONTANA12018
Two DotMONTANA12017
FlatwillowMONTANA11991

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