BirdAnalyst
Species · BCR 22 · BBS 2025 Release · 1966–2024

Mute Swan In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieWaterfowl

Mute Swan in Eastern Tallgrass Prairie has edged up: up 19% on the route-weighted index since 2003.

+19%Since 2003TrendPercent 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 →
8Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
14YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 Mute Swan in Eastern Tallgrass Prairie. See the full index history below.

Routes In Eastern Tallgrass Prairie

Routes recording Mute Swan in Eastern Tallgrass Prairie.
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 →
WayneILLINOIS22016
Terre HauteILLINOIS11993
JamestownILLINOIS12023
Troy GroveILLINOIS12011
WabashINDIANA12008
PortageINDIANA12002
Portage 2INDIANA12018
LondonOHIO12005

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