BirdAnalyst
Species · Missouri · BBS 2026 Release · 1966–2025

Eurasian Tree Sparrow Population Trend in Missouri

All statesGeneralists

Eurasian Tree Sparrow in Missouri has increased: up 29% on the route-weighted index since 2007.

+29%Since 2007TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
7Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
13YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Eurasian Tree Sparrow Trends in MissouriNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Eurasian Tree Sparrow in Missouri. See the full index history below.

Eurasian Tree Sparrow Survey Routes in Missouri

Routes recording Eurasian Tree Sparrow in Missouri.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Kahoka2720242019
Millwood620252006
Rensselaer420251998
Frankford320252022
Emden120242022
Auburn120252021
Madison120242024

Eurasian Tree Sparrow Population Trend in Other States

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Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.