BirdAnalyst
Species · BCR 18 · BBS 2025 Release · 1966–2024

Field Sparrow In Shortgrass Prairie

All regionsShortgrass PrairieGeneralists

Field Sparrow in Shortgrass Prairie has collapsed: down 92% on the route-weighted index since 1970.

-92%Since 1970
21Routes In Region
44Years

Notable Signals

long arc declinecomputed index

Field Sparrow has collapsed in Shortgrass Prairie: down 92% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Field Sparrow in Shortgrass Prairie is projected to fall about 100% by 2029 — from 0.07 in 2024 to a central estimate of 0.00 (95% range 0.00–0.34). A 5-year backtest shows a typical error of ±211.3%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–0.3495% range
±211.3%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
20250.000.000.34
20260.000.000.34
20270.000.000.34
20280.000.000.34
20290.000.000.34

Routes In Shortgrass Prairie

Routes recording Field Sparrow in Shortgrass Prairie.
CircleTEXAS61968
MarslandNEBRASKA32019
ChanningTEXAS32018
MiamiTEXAS32024
Two ButtesCOLORADO21975
DaltonNEBRASKA21987
HardestyOKLAHOMA22013
PlainsTEXAS21972
SkellytownTEXAS22024
AbarrCOLORADO12012
LamarCOLORADO11975
BethuneCOLORADO11998
LakinKANSAS11975
PlymellKANSAS12024
PaxtonNEBRASKA12016
CrawfordNEBRASKA11991
FeltOKLAHOMA11983
Clear LakeOKLAHOMA11999
PostTEXAS12013
ClaytonvilleTEXAS11995
CheyenneWYOMING12005

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