Species · BCR 13 · BBS 2025 Release · 1966–2024

Northern Parula In Lower Great Lakes / St. Lawrence Plain

Northern Parula in Lower Great Lakes / St. Lawrence Plain has surged: up 90% on the route-weighted index since 1974.

+90%Since 1974
17Routes In Region
26Years

Notable Signals

No notable trend signals for Northern Parula in Lower Great Lakes / St. Lawrence Plain. See the full index history below.

Forecast

If the recent trend holds, Northern Parula in Lower Great Lakes / St. Lawrence Plain is projected to stay roughly flat through 2029, near 0.04 (95% range 0.01–0.07). A 5-year backtest shows a typical error of ±26%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.04Projected 2029 index
0.010.0795% range
±26%Backtest error
19682029
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
20250.040.010.07
20260.040.010.07
20270.040.010.07
20280.040.010.07
20290.040.010.07

Routes In Lower Great Lakes / St. Lawrence Plain

Routes recording Northern Parula in Lower Great Lakes / St. Lawrence Plain.
W ShokanNEW-YORK21968
ParishvilleNEW-YORK22024
HighlandNEW-YORK11969
AusterlitzNEW-YORK11979
GhentNEW-YORK11977
Oriskany FlsNEW-YORK12005
PenfieldNEW-YORK12014
PulaskiNEW-YORK12022
HopkintonNEW-YORK12019
WillsboroNEW-YORK12009
BalmatNEW-YORK11989
PittsfieldOHIO12021
StrongsvilleOHIO11976
New SomersetOHIO11976
HebronOHIO12023
North PownalVERMONT11979
HinesburgVERMONT11978

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