BirdAnalyst
Family · Passeridae · Passeriformes

Old World Sparrows Population Trends

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

Old World Sparrows 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
House SparrowGeneralists-82%1968
Eurasian Tree SparrowGeneralists+589%1969