Geothlypis poliocephala
Silhouette: Andy Wilson · PhyloPic
In 3 days ~10% in a week ~20%
The grey-crowned yellowthroat (Geothlypis poliocephala) is a species of bird in the family Parulidae, the New World warblers. It is found from Mexico to Panama. The black-polled yellowthroat was formally described in 1859 with its current binomial Geothlypis poliocephala. Some authors have placed the species in the monotypic genus Chamaethlypis but genetic data do not support this treatment.
The grey-crowned yellowthroat has these six subspecies: The species is sexually dimorphic. It has a long graduated tail and a stout bill with a visibly curved culmen. Adult males of the nominate subspecies G. p. poliocephala have a mostly olive-gray head with a gray crown, black lores, and white crescents above and below the eye. Their nape, upperparts, wings, and tail are grayish olive-brown. Their throat, breast, and undertail coverts are yellow, their flanks washed... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tegucigalpa | 🇭🇳 Honduras | |
| 2 | Guadalajara | 🇲🇽 México | |
| 3 | San Pedro Sula | 🇭🇳 Honduras | |
| 4 | San José | 🇨🇷 Costa Rica |
Rare
Under 5% of wildlife watchers report a Gray-crowned Yellowthroat sighting in Sian Ka'an Biosphere Reserve on a given day, based on 61 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 182nd most-seen of the 288 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Gray-crowned Yellowthroat in Sian Ka'an Biosphere Reserve on a given day, so our monthly data shows no clear season.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Gray-crowned Yellowthroat sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
12th of 31
Of the 31 parks where we can rate Gray-crowned Yellowthroat sightings, Sian Ka'an Biosphere Reserve ranks 12th at under 5%. The best odds are in Rincón de la Vieja National Park (Costa Rica, about 20%), El Triunfo (Mexico, about 10%) and Tenorio Volcano National Park (Costa Rica, about 10%).
GBIF citizen-science records
It is estimated from how often the Gray-crowned Yellowthroat is recorded against all the birds logged in Sian Ka'an Biosphere Reserve (61 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.
