BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Common Merganser In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionWaterfowl

Common Merganser in Prairie Hardwood Transition has surged: up 76% on the route-weighted index since 1979.

+76%Since 1979
9Routes In Region
12Years

Notable Signals

No notable trend signals for Common Merganser in Prairie Hardwood Transition. See the full index history below.

Routes In Prairie Hardwood Transition

Routes recording Common Merganser in Prairie Hardwood Transition.
GreshamWISCONSIN52024
DresserWISCONSIN21984
Brook ParkMINNESOTA12017
HudsonWISCONSIN12009
CochraneWISCONSIN11979
TrempealeauWISCONSIN11972
Wis RapidsWISCONSIN12019
ManawaWISCONSIN12008
ColbyWISCONSIN12000

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