BirdAnalyst
Species · Wyoming · BBS 2025 Release · 1966–2024

Savannah Sparrow Population Trend in Wyoming

All statesGrassland birds

Savannah Sparrow in Wyoming has surged: up 509% on the route-weighted index since 1970.

+509%Since 1970
102Routes In State
53Years

Notable Savannah Sparrow Trends in Wyoming

long arc increasecomputed index

Savannah Sparrow has surged in Wyoming: up 509% on the route-weighted index since 1970.

Savannah Sparrow Population Forecast in Wyoming

If the recent trend holds, Savannah Sparrow in Wyoming is projected to rise about 41% by 2029 — from 3.1 in 2024 to a central estimate of 4.3 (95% range 2.1–6.6). A 5-year backtest shows a typical error of ±22%, with 100% of held-out values landing inside the 95% band.

+41%Change by 2029
4.3Projected 2029 index
2.1–6.695% range
±22%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
20254.22.06.4
20264.22.06.4
20274.32.06.5
20284.32.16.5
20294.32.16.6

Savannah Sparrow Survey Routes in Wyoming

Routes recording Savannah Sparrow in Wyoming.
Boulder4320241982
Yellowstone3620221987
Hayden Val3519861985
Shawnee3320021998
Riverside2320241990
Mtn View2320241980
Harmony1920231982
Big Sandy1820241983
Ne Entrance1620211982
Cody1620241983
Seedskadee 21620242024
Midvale1320241987
Fontenelle1220241982
Patrick Draw1019801978
Clarkelen819771974
Mammoth820241982
Meeteetse820241997
Bald Mtn820241992
Recluse820231987
Soda Well820241982
Moose720241976
Seedskadee720231986
Crazy Woman620241979
Riverview619881984
Diamondville619801977

Savannah Sparrow Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsin

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