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-70%1968
Baltimore OrioleForest birds-58%1968
Orchard OrioleForest birds-57%1968
Tricolored BlackbirdWetland birds-53%1970
Boat-tailed GrackleWetland birds-53%1968
Red-winged BlackbirdWetland birds-52%1968
Great-tailed GrackleWetland birds-14%1969
Brown-headed CowbirdGeneralists-11%1968
Bronzed CowbirdGeneralists+5%1969
Scott's OrioleForest birds+5%1969
Western MeadowlarkGrassland birds+10%1968
Rusty BlackbirdWetland birds+48%1968
Brewer's BlackbirdGeneralists+93%1968
Chihuahuan MeadowlarkGrassland birds+160%1969
Bullock's OrioleForest birds+164%1969
Yellow-headed BlackbirdWetland birds+166%1968
Hooded OrioleForest birds+241%1970
Altamira OrioleForest birdsn/an/a
Audubon's OrioleForest birdsn/an/a
Shiny CowbirdGeneralistsn/an/a