BirdAnalyst
Family · Icteridae · Passeriformes

Blackbirds & Orioles Population Trends

23 species tracked, ordered by long-term trend. Steepest declines first.

Blackbirds & Orioles species ranked by population trend.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Spot-breasted OrioleForest birds-83%1969
Eastern MeadowlarkGrassland birds-81%1968
Common GrackleGeneralists-81%1968
BobolinkGrassland birds-69%1968
Tricolored BlackbirdWetland birds-60%1970
Baltimore OrioleForest birds-59%1968
Orchard OrioleForest birds-55%1968
Boat-tailed GrackleWetland birds-53%1968
Red-winged BlackbirdWetland birds-51%1968
Great-tailed GrackleWetland birds-18%1969
Rusty BlackbirdWetland birds-16%1968
Brown-headed CowbirdGeneralists-9%1968
Bronzed CowbirdGeneralists+2%1969
Western MeadowlarkGrassland birds+17%1968
Scott's OrioleForest birds+20%1969
Brewer's BlackbirdGeneralists+100%1968
Yellow-headed BlackbirdWetland birds+159%1968
Chihuahuan MeadowlarkGrassland birds+162%1969
Bullock's OrioleForest birds+186%1969
Hooded OrioleForest birds+238%1970
Altamira OrioleForest birdsn/an/a
Audubon's OrioleForest birdsn/an/a
Shiny CowbirdGeneralistsn/an/a