Tricolored Blackbird Agelaius tricolor

Family: Icteridae (New World blackbirds)

Authority: (Audubon, 1837)

Red List Category

Criteria: A2bc+3bc+4bc

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Justification of Red List category
This colonially breeding species is listed as Endangered because there is an ongoing, directly estimated very rapid population decline in excess of 60% due to losses of nesting and foraging habitat, impacts of drought, low reproductive success in native habitats correlated with low insect abundance and complete breeding failure in harvested agricultural fields. Despite comprehensive monitoring, and considerable efforts to prevent destruction of colonies, rates of decline remain alarmingly rapid.

Population size:

Population trend: Decreasing

Extent of occurrence (breeding/resident): 758,000 km2

Country endemic: No

USFWS - Bird of Conservation Concern
Realm - Nearctic
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2019) Species factsheet: Agelaius tricolor. Downloaded from http://www.birdlife.org on 15/09/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 15/09/2019.