Cardellina rubra
Silhouette: Andy Wilson · PhyloPic
In 3 days ~90% in a week >90%
The red warbler (Cardellina rubra) is a small passerine bird of the New World warbler family Parulidae endemic to the highlands of Mexico, north of the Isthmus of Tehuantepec. It is closely related to, and forms a superspecies with, the pink-headed warbler of southern Mexico and Guatemala. There are three subspecies, found in disjunct populations, which differ in the color of their ear patch and in the brightness and tone of their body plumage. The adult is bright red, with a white or gray ear patch, depending on the subspecies; young birds are pinkish-brown, with a whitish ear patch and two pale wingbars.
Breeding typically occurs between February and May. The female lays three or four eggs in a domed nest, which she builds on the ground. Though she alone incubates the eggs, both sexes feed the young and remove fecal sacs from the nest. The young fledge within 10–11 days of hatching. The red warbler is an insectivore, gleaning primarily in understory shrubs. Although this bird is considered to be a least-concern species according to the International Union for Conservation of Nature (IUCN), its numbers are thought to be declining due to habitat destruction.
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| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Reserva de la Biosfera Mariposa Monarca | 🇲🇽 Mexico |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toluca | 🇲🇽 México | |
| 2 | Mexico City | 🇲🇽 México |
Likely
About 50% of wildlife watchers report a Red Warbler sighting in Reserva de la Biosfera Mariposa Monarca on a given day, based on 123 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 5th most-seen of the 103 birds we can rate there. Over three days the chance rises to about 90%, and over a week to over 90%, if each day is a fresh chance.
February and November
In those months about 60% of wildlife watchers report a Red Warbler in Reserva de la Biosfera Mariposa Monarca on a given day, against about 30% in October, the lowest month. Those are among Reserva de la Biosfera Mariposa Monarca's driest months, with about 35 mm of rain a month against 270 mm in July. April and June–September have too few records to rate.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Red Warbler sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Reserva de la Biosfera Mariposa Monarca, in our data
Reserva de la Biosfera Mariposa Monarca is the only park on Wallace's Line with enough records to rate Red Warbler sightings: about 50% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Red Warbler is recorded against all the birds logged in Reserva de la Biosfera Mariposa Monarca (123 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.
