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

Alder Flycatcher In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieAerial insectivores

Alder Flycatcher in Eastern Tallgrass Prairie has risen sharply: up 63% on the route-weighted index since 1992.

+63%Since 1992TrendPercent 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 →
11Routes 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 →
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 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 Alder Flycatcher in Eastern Tallgrass Prairie. See the full index history below.

Routes In Eastern Tallgrass Prairie

Routes recording Alder Flycatcher 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 →
BloomvilleOHIO22007
River FallsWISCONSIN22004
BudaILLINOIS11997
SherburnvillILLINOIS12013
Kankakee SandsINDIANA12007
MaquoketaIOWA11996
Davis CornerIOWA11978
LakevilleMINNESOTA11983
Le RoyMINNESOTA12019
KalidaOHIO11996
RaymondWISCONSIN12021

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