Geothlypis poliocephala
Silhouette: Andy Wilson · PhyloPic
In 3 days ~10%
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 San José on a given day, based on 392 verified sightings from GBIF citizen-science data. It is the 120th most-seen of the 379 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
September
In that month about 10% of wildlife watchers report a Gray-crowned Yellowthroat in San José on a given day, against under 5% in October to August, the lowest months. That is one of San José's wettest months, with about 260 mm of rain against 20 mm in February.
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.
4th of 4
Of the 4 cities where we can rate Gray-crowned Yellowthroat sightings, San José ranks 4th at under 5%. The best odds are in Tegucigalpa (Honduras, about 10%), Guadalajara (México, under 5%) and San Pedro Sula (Honduras, under 5%).
GBIF citizen-science records
It is estimated from how often the Gray-crowned Yellowthroat is recorded against all the birds logged in San José (392 verified sightings), 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.
