BirdAnalyst
Species · BCR 14 · BBS 2025 Release · 1966–2024

Olive-sided Flycatcher In Atlantic Northern Forest

All regionsAtlantic Northern ForestAerial insectivores

Olive-sided Flycatcher in Atlantic Northern Forest has collapsed: down 91% on the route-weighted index since 1968.

-91%Since 1968
128Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Olive-sided Flycatcher has collapsed in Atlantic Northern Forest: down 91% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Olive-sided Flycatcher in Atlantic Northern Forest is projected to fall about 100% by 2029 — from 0.10 in 2024 to a central estimate of 0.00 (95% range 0.00–0.20). A 5-year backtest shows a typical error of ±82.8%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–0.2095% range
±82.8%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
20250.020.000.22
20260.010.000.21
20270.000.000.20
20280.000.000.20
20290.000.000.20

Routes In Atlantic Northern Forest

Routes recording Olive-sided Flycatcher in Atlantic Northern Forest.
Pillsbury PdMAINE131968
TelosMAINE52006
BaxterMAINE41988
ReedsMAINE32014
NorthfieldMAINE31981
WashburnMAINE31996
WatervilleVERMONT31979
HancockMAINE21976
CastineMAINE21997
CooperMAINE21981
Seboomook LkMAINE22014
WytopitlockMAINE21982
LudlowMAINE21993
Horse MtnMAINE22011
St DavidMAINE22005
TopsfieldMAINE21992
Heron LakeMAINE22003
StacyvilleMAINE22021
CummingtonMASSACHUSETTS21971
MilanNEW-HAMPSHIRE21981
UnderwoodNEW-YORK21986
St Regis FlsNEW-YORK22017
HardwickVERMONT22016
NewcastleMAINE11988
Wilson MillsMAINE12024

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