BirdAnalyst
Species · Pennsylvania · BBS 2025 Release · 1966–2024

Hooded Merganser Population Trend in Pennsylvania

All statesWaterfowl

Hooded Merganser in Pennsylvania has held roughly steady: down 4% on the route-weighted index since 1992.

-4%Since 1992
19Routes In State
29Years

Notable Hooded Merganser Trends in Pennsylvania

No notable trend signals for Hooded Merganser in Pennsylvania. See the full index history below.

Hooded Merganser Population Forecast in Pennsylvania

If the recent trend holds, Hooded Merganser in Pennsylvania is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±77.2%, with 80% of held-out values landing inside the 95% band.

n/aChange by 2029
0.03Projected 2029 index
0.00–0.0895% range
±77.2%Backtest error
19822029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.030.000.07
20260.030.000.07
20270.030.000.08
20280.030.000.08
20290.030.000.08

Hooded Merganser Survey Routes in Pennsylvania

Routes recording Hooded Merganser in Pennsylvania.
Ferris Crnrs220041993
Lovelton220212004
Rush220072007
Bow Bridge220171993
Landisburg220142014
Susquehanna220212021
Pine Gr Mill220162016
Espyville120132003
Harmonsburg120172014
Ellenton120192015
Teepleville120091990
Lynch119981998
Starlight 2120192018
Roulette120162016
Little Marsh120062006
Mawr Glen120241982
Poyntelle119931992
Middletown120222022
Carsonville120022002

Hooded Merganser Population Trend in Other States

alabamaalaskaarkansascoloradoconnecticutidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-yorknorth-dakotaohiooklahomaoregonrhode-islandsouth-carolinasouth-dakotatennesseetexasvermontwashingtonwest-virginiawisconsinwyoming

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