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Species · Pennsylvania · BBS 2025 Release · 1966–2024

Magnolia Warbler Population Trend in Pennsylvania

All statesForest birds

Magnolia Warbler in Pennsylvania has surged: up 628% on the route-weighted index since 1968.

+628%Since 1968
72Routes In State
58Years

Notable Magnolia Warbler Trends in Pennsylvania

long arc increasecomputed index

Magnolia Warbler has surged in Pennsylvania: up 628% on the route-weighted index since 1968.

Magnolia Warbler Population Forecast in Pennsylvania

If the recent trend holds, Magnolia Warbler in Pennsylvania is projected to rise about 79% by 2029 — from 0.66 in 2024 to a central estimate of 1.2 (95% range 0.83–1.5). A 5-year backtest shows a typical error of ±49.9%, with 40% of held-out values landing inside the 95% band.

+79%Change by 2029
1.2Projected 2029 index
0.83–1.595% range
±49.9%Backtest error
19662029
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
20251.10.761.5
20261.10.781.5
20271.10.801.5
20281.20.811.5
20291.20.831.5

Magnolia Warbler Survey Routes in Pennsylvania

Routes recording Magnolia Warbler in Pennsylvania.
Mawr Glen920241982
Ansonia720242002
Russell City620241968
Ridgway620181994
Eldred620221973
N Pine Grove520241975
Marsh Hill520241985
Logue420231970
Honesdale420171973
Starlight419991997
Pocono Summit 2420062004
Ellenton320231984
Roulette320211975
Little Marsh320242005
Laurel Hill320241978
Hometown319921992
Sproul Sf-A320242002
Ltl Pine Cr320241990
Teepleville220052005
Odin220241988
Rasselas220221969
English Ctr219891989
Pocono Summit220241966
Canadensis220241986
Poyntelle220241975

Magnolia Warbler Population Trend in Other States

connecticutmainemarylandmassachusettsmichiganminnesotanew-hampshirenew-jerseynew-yorknorth-carolinaohiovermontvirginiawest-virginiawisconsin

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