BirdAnalyst
Species · BCR 27 · BBS 2025 Release · 1966–2024

Dickcissel In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainGrassland birds

Dickcissel in Southeastern Coastal Plain has edged down: down 16% on the route-weighted index since 1968.

-16%Since 1968TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
70Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Dickcissel in Southeastern Coastal Plain. See the full index history below.

Dickcissel In Southeastern Coastal Plain Population Forecast

If the recent trend holds, Dickcissel in Southeastern Coastal Plain is projected to rise about 57% by 2029 — from 0.45 in 2024 to a central estimate of 0.70 (95% range 0.11–1.3). A 5-year backtest shows a typical error of ±47%, with 100% of held-out values landing inside the 95% band.

+57%Change by 2029TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.70Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.11–1.395% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±47%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Dickcissel in Southeastern Coastal Plain is projected to rise about 57% by 2029 — from 0.45 in 2024 to a central estimate of 0.70 (95% range 0.11–1.3). A 5-year backtest shows a typical error of ±47%, with 100% of held-out values landing inside the 95% band.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 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20250.720.131.3
20260.710.121.3
20270.710.121.3
20280.700.111.3
20290.700.111.3

Routes In Southeastern Coastal Plain

Routes recording Dickcissel in Southeastern Coastal Plain.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
MaconMISSISSIPPI212024
AberdeenMISSISSIPPI152024
Olive BranchMISSISSIPPI122001
Rock ChapelALABAMA112024
TibbsTENNESSEE112024
BentonMISSISSIPPI82018
TrentonTENNESSEE82011
LovelacevileKENTUCKY42024
MoscowTENNESSEE42024
EpesALABAMA32024
CockrumMISSISSIPPI32023
CornlandVIRGINIA32000
HoltALABAMA21996
FinleysonGEORGIA22003
WadleyGEORGIA21997
PhilemaGEORGIA22023
PlettenbergLOUISIANA21988
FayetteMISSISSIPPI21970
WalthallMISSISSIPPI21987
Olive Branch 2MISSISSIPPI22022
EmbryMISSISSIPPI22013
SpeedNORTH-CAROLINA22016
RowlandNORTH-CAROLINA21991
Jarvisburg 2NORTH-CAROLINA22001
SilertonTENNESSEE22022

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