All birds/Icteridae/Brown-headed Cowbird
AI reconstruction of Brown-headed Cowbird (Molothrus ater)AI

AI reconstruction created with Nano Banana 2 · 1K, grounded in the profile’s documented taxonomy, habitat, natural-history sources, and an open-license visual reference when available. It is an interpretive image, not documentary evidence. Image policy

Brown-headed Cowbird (Molothrus ater)
Verified source photographcello caruso-turielloCC-BY · View source
PRB-0339Passeriformes

Brown-headed Cowbird

Tordo Cabecipardo

Molothrus ater

Accidental / vagrantIUCN LC · Least Concern

The brown-headed cowbird (Molothrus ater) is a small, obligate brood parasitic icterid native to temperate and subtropical North America. It is a permanent resident in the southern parts of its range; northern birds migrate to the southern United States and Mexico in winter, returning to their summer habitat around March or April.

FamilyIcteridaeTroupials and Allies
Puerto Rico occurrenceAccidental / vagrantAvibase inferred core 380
Primary habitatforestsGrassland
Primary dietSeedInvertivore
Average mass42.75 gGlobal trait estimate
MovementMigratoryTerrestrial

Sound archive

Hear its voice

Explore real songs and calls. The spectrogram turns each sound into a visual trace of time and frequency.

XC989805Recording 1 of 3song, duet
Spectrogram of Brown-headed Cowbird: song, duet
SpectrogramMolothrus ater

Play: song, duet by Ed Pandolfino

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Sound recorded by Ed Pandolfino · XC989805 · CC BY-NC-SA 4.0. Visualization by Stichting Xeno-canto voor Natuurgeluiden.

Every recording retains the creator, catalogue number, and license published by Xeno-canto. Metadata via GBIF

Island profile

Catalog scopeAvibase inferred core 380

About the Brown-headed Cowbird

The brown-headed cowbird (Molothrus ater) is a small, obligate brood parasitic icterid native to temperate and subtropical North America. It is a permanent resident in the southern parts of its range; northern birds migrate to the southern United States and Mexico in winter, returning to their summer habitat around March or April.

Conservation

Least Concern

IUCN LC

Global IUCN
LC
Puerto Rico DNER
No current listing in source crosswalk
Federal ESA
No current listing in source crosswalk
Critical habitat
Not identified in source crosswalk

Natural history

How it lives

Habitat
forests
Elevation
0–2895 m
Nest
No nest
Clutch
4–5 eggs
Social behavior
Not resolved

Keep exploring

This bird belongs to 7 paths through the atlas.

Evidence trail

Sources, media & further reading