Species profile
Ectopistes migratorius
Passenger pigeon
EX · Extinct — Extinct — no living individuals remain
About this species
Passenger pigeon (Ectopistes migratorius) is part of the curated SpeciesWatch catalogue and is classified as Extinct. Passenger pigeon flocks were so vast that they darkened the sky for days — one 1810 flock was estimated at over two billion birds, perhaps the most abundant bird ever. The overall trend remains uncertain or is not applicable, so it should not be inferred from a small number of observations.
Habitat, behaviour and ecological role
This profile associates the species with terrestrial, forest. These labels summarise environments used during different stages of its life rather than drawing an exact range boundary. The last individual, Martha, died alone in Cincinnati Zoo on 1 September 1914 — the species went from billions to zero within a single human lifetime. Its anatomy and behaviour are responses to those environments, while movement can connect distant places requiring different forms of management.
Why this species is at risk
Its fate became the spark for the modern conservation movement in North America, and scientists are now exploring ways to revive the species from museum DNA. The catalogue records 2 principal pressures for this profile: Overhunting, Deforestation. They should not be treated as isolated causes. Habitat change, exploitation, pollution, disease and climate stress can reinforce one another, while the importance of each pressure varies between regions and through time.
Conservation outlook
Protecting and reconnecting habitat is a priority, together with infrastructure planning that keeps feeding, breeding or migration routes functional. Direct protection needs to combine enforcement with conflict prevention, demand reduction and local benefits that make coexistence viable. Actions need long-term monitoring and revision as evidence changes; a positive intervention in one place does not by itself represent recovery across the species.
Editorial review: 2026-08-21
Threat factors
Known occurrences
Dots are georeferenced occurrence records from OBIS (marine) and GBIF (global), not individual animals and not a complete range map. Up to 500 recent API results are cached; the profile renders at most 500 points.
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