BirdAnalyst
Species · North Carolina · BBS 2025 Release · 1966–2024

Boat-tailed Grackle Population Trend in North Carolina

All statesGeneralists

Boat-tailed Grackle in North Carolina has edged up: up 21% on the route-weighted index since 1969.

+21%Since 1969
19Routes In State
57Years

Notable Boat-tailed Grackle Trends in North Carolina

No notable trend signals for Boat-tailed Grackle in North Carolina. See the full index history below.

Boat-tailed Grackle Population Forecast in North Carolina

If the recent trend holds, Boat-tailed Grackle in North Carolina is projected to rise about 404% by 2029 — from 0.26 in 2024 to a central estimate of 1.3 (95% range 0.00–2.9). A 5-year backtest shows a typical error of ±239.8%, with 100% of held-out values landing inside the 95% band.

+404%Change by 2029
1.3Projected 2029 index
0.00–2.995% range
±239.8%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
20251.30.003.0
20261.30.003.0
20271.30.003.0
20281.30.003.0
20291.30.002.9

Boat-tailed Grackle Survey Routes in North Carolina

Routes recording Boat-tailed Grackle in North Carolina.
Jarvisburg3619991992
Shallotte1719911983
Merrimon1220231968
Myrtle Grove1120241966
Jarvisburg 2520212000
Milltail Cr520241992
Chowan River420062003
Grandy419751971
Belgrade420192019
Broad Creek320121993
Green Swamp320062006
Rheasville320062006
Ernul320092009
Old Trap220172017
Newport220231995
Supply220241992
Mashoes119821982
Kinston119681968
Cayton120172010

Boat-tailed Grackle Population Trend in Other States

alabamadelawarefloridageorgialouisianamarylandmississippinew-jerseynew-yorksouth-carolinatexasvirginia

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