Brown-headed Cowbird
Molothrus ater
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderPasseriformes
- FamilyIcteridae (Ictèrids)
- GenusMolothrus (Cowbirds)
- SpeciesMolothrus ater (Brown-headed Cowbird)
Closest Relatives at Yellowstone National Park
Brewer's Blackbird
Euphagus cyanocephalus
Red-winged Blackbird
Agelaius phoeniceus
Yellow-headed Blackbird
Xanthocephalus xanthocephalus
Western Meadowlark
Sturnella neglecta
Rusty Blackbird
Euphagus carolinus
Common Grackle
Quiscalus quiscula
Bullock's Oriole
Icterus bullockii
Bobolink
Dolichonyx oryzivorus
Common Raven
Corvus corax
American Robin
Turdus migratorius
Yellow-rumped Warbler
Setophaga coronata
Mountain Chickadee
Poecile gambeli
📅 Monthly Probability
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
Quick answers
What are the chances of seeing a Brown-headed Cowbird in Yellowstone National Park?
About 26% of visitor-days record a Brown-headed Cowbird sighting in Yellowstone National Park, based on 980 observer-days of citizen-science data from GBIF.
When is the best time to see Brown-headed Cowbird in Yellowstone National Park?
June has the highest sighting rate for Brown-headed Cowbird in Yellowstone National Park in our monthly data.