Molothrus aeneus
Silhouette: Andy Wilson · PhyloPic
In 3 days ~20% in a week ~30%
The bronzed cowbird (Molothrus aeneus), also known as the red-eyed cowbird, is a small icterid native to North America. The bronze-brown cowbird, which is restricted to the Caribbean coast of Colombia, was formerly considered to be an isolated population of this species.
They breed from the U.S. states of California, Arizona, New Mexico, Texas, and Louisiana south through Central America to Panama. They tend to be found in farmland, brush, and feedlots. Outside the breeding season, they are found in very open habitats, and roost in thick woods. These birds forage in open areas, often near cattle in pastures. Their diet mostly consists of seeds and insects, along with snails during breeding season for a calcium source.
The male bronzed cowbird is 20 cm (7.9 in) long and weighs 68 g (2.4 oz), with green-bronze... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | León | 🇲🇽 México | |
| 2 | Toluca | 🇲🇽 México | |
| 3 | Guatemala City | 🇬🇹 Guatemala | |
| 4 | Mexico City | 🇲🇽 México | |
| 5 | Guadalajara | 🇲🇽 México | |
| 6 | Puebla | 🇲🇽 México | |
| 7 | Monterrey | 🇲🇽 México | |
| 8 | San Luis Potosí | 🇲🇽 México | |
| 9 | San Pedro Sula | 🇭🇳 Honduras | |
| 10 | Managua | 🇳🇮 Nicaragua |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Zoológico Miguél Álvarez del Toro | 🇲🇽 Mexico |
With luck
About 10% of wildlife watchers report a Bronzed Cowbird sighting in Arenal Volcano National Park on a given day, based on 836 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 185th most-seen of the 503 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
May
In that month about 20% of wildlife watchers report a Bronzed Cowbird in Arenal Volcano National Park on a given day, against under 5% in August to February, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Bronzed Cowbird sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
17th of 46
Of the 46 parks where we can rate Bronzed Cowbird sightings, Arenal Volcano National Park ranks 17th at about 10%. The best odds are in Sian Ka'an Biosphere Reserve (Mexico, about 20%), Piedras Blancas National Park (Costa Rica, about 20%) and Cumbres de Monterrey National Park (Mexico, about 20%).
GBIF citizen-science records
It is estimated from how often the Bronzed Cowbird is recorded against all the birds logged in Arenal Volcano National Park (836 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
