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

Tree Swallow Population Trend in Kansas

All statesAerial insectivores

Tree Swallow in Kansas has surged: up 671% on the route-weighted index since 1977.

+671%Since 1977
33Routes In State
33Years

Notable Tree Swallow Trends in Kansas

long arc increasecomputed index

Tree Swallow has surged in Kansas: up 671% on the route-weighted index since 1977.

Tree Swallow Population Forecast in Kansas

If the recent trend holds, Tree Swallow in Kansas is projected to fall about 53% by 2029 — from 0.50 in 2024 to a central estimate of 0.24 (95% range 0.01–0.46). A 5-year backtest shows a typical error of ±44.3%, with 80% of held-out values landing inside the 95% band.

-53%Change by 2029
0.24Projected 2029 index
0.01–0.4695% range
±44.3%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
20250.220.000.45
20260.230.000.45
20270.230.000.45
20280.230.010.46
20290.240.010.46

Tree Swallow Survey Routes in Kansas

Routes recording Tree Swallow in Kansas.
Pittsburg1320122001
Trading Post620242011
Rock Creek 2620242022
Olsburg520172000
St John420162016
Jewell 2320102008
Severance320232003
Lapland220152007
Rock Creek220141989
Seneca220222007
Covert220132004
Galesburg120091996
Wellington120062006
Olathe120211967
Dover120212008
Barclay120092009
Ellinor120072007
Albert119821977
Kanopolis120241972
Grantville120192019
Hollenberg120192019
Gove120122012
Beloit 2120132013
Morehead120192019
Reece120072007

Tree Swallow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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