BirdAnalyst
Species · Texas · BBS 2026 Release · 1966–2025

Common Raven Population Trend in Texas

All statesGeneralists

Common Raven in Texas has surged: up 332% on the route-weighted index since 1969.

+332%Since 1969TrendPercent 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 →
61Routes In StateSurvey 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 Common Raven Trends in TexasNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Common Raven has surged in Texas: up 332% on the route-weighted index since 1969.

Common Raven Population Forecast in Texas

If the recent trend holds, Common Raven in Texas is projected to fall about 11% by 2030 — from 0.77 in 2025 to a central estimate of 0.69 (95% range 0.43–0.94). A 5-year backtest shows a typical error of ±14.6%, with 100% of held-out values landing inside the 95% band.

-11%Change by 2030TrendPercent 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 →
0.69Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.43–0.9495% 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 →
±14.6%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, Common Raven in Texas is projected to fall about 11% by 2030 — from 0.77 in 2025 to a central estimate of 0.69 (95% range 0.43–0.94). A 5-year backtest shows a typical error of ±14.6%, with 100% of held-out values landing inside the 95% band.19672030
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 →
20260.650.390.91
20270.660.400.91
20280.670.410.92
20290.680.420.93
20300.690.430.94

Common Raven Survey Routes in Texas

Routes recording Common Raven in Texas.
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 →
Plains2719771972
Rockspring1320251995
Indian Mtn1320251977
Utopia1020251984
Bear Mtn920251988
Leakey720251994
Allen Creek620251994
Marathon520252006
Ft. Davis520252004
Pear Valley520251972
Mertzon 2520252022
Grayback519691969
Longfellow520252002
San Saba420251988
Presidio420252025
Weinert419691969
Dripping Spg320241993
Shields 2320252017
Valley Spgs320251982
Harper320251974
Montell320251996
Albany320221969
Toyahvale320251996
Comstock320251969
Mertzon320111967

Common Raven Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutgeorgiaidahokentuckymainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.