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

Green Heron In Shortgrass Prairie

All regionsShortgrass PrairieWetland birds

Green Heron in Shortgrass Prairie has collapsed: down 88% on the route-weighted index since 1978.

-88%Since 1978
9Routes In Region
25Years

Notable Signals

long arc declinecomputed index

Green Heron has collapsed in Shortgrass Prairie: down 88% on the route-weighted index since 1978.

Forecast

If the recent trend holds, Green Heron in Shortgrass Prairie is projected to stay roughly flat through 2024, near 0.00 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±97.4%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2024
0.00Projected 2024 index
0.00–0.0995% range
±97.4%Backtest error
19682024
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
20200.000.000.09
20210.000.000.09
20220.000.000.09
20230.000.000.09
20240.000.000.09

Routes In Shortgrass Prairie

Routes recording Green Heron in Shortgrass Prairie.
CircleTEXAS91977
ClaytonvilleTEXAS42001
PostTEXAS22019
Cooley LakeNEW-MEXICO11994
MaxwellNEW-MEXICO12005
HardestyOKLAHOMA11983
Clear LakeOKLAHOMA12013
ChanningTEXAS11986
DoughertyTEXAS12009

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