BirdAnalyst
Species · BCR 23 · BBS 2026 Release · 1966–2025

Merlin In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionBirds of prey

Merlin in Prairie Hardwood Transition has increased: up 46% on the route-weighted index since 2012.

+46%Since 2012TrendPercent 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 →
14Routes 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 →
12YearsYears 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 Merlin in Prairie Hardwood Transition. See the full index history below.

Routes In Prairie Hardwood Transition

Routes recording Merlin in Prairie Hardwood Transition.
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 →
ManawaWISCONSIN22021
ManitowocWISCONSIN22014
RemusMICHIGAN12019
DeckervilleMICHIGAN12024
St StephenMINNESOTA12025
EdwardsMINNESOTA12021
EvergreenMINNESOTA12009
Le CenterMINNESOTA12025
MerrillWISCONSIN12024
GilmantonWISCONSIN12021
TrempealeauWISCONSIN12021
CadottWISCONSIN12015
ClintonvilleWISCONSIN12023
GrimmsWISCONSIN12014

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