Sporophila corvina
Silhouette: Sheatherius · PhyloPic
In 3 days ~10% in a week ~20%
The variable seedeater (Sporophila corvina) is a passerine bird which breeds from southern Mexico through Central America to the Chocó of northwestern South America. The taxonomy is confusing, and it was formerly considered a subspecies of Sporophila americana (see Taxonomy). Even within the variable seedeater as presently defined, there are great variations in plumage.
The variable seedeater is a small, robust bird with a black conical bill. It is 10.5 cm (4.1 in) long and weighs 11 g (0.39 oz). Adult males are entirely black apart from a small white wing-speculum and white wing linings.
Males resemble males S. c. corvina, but with white half-collar, rump and belly (the rump often intermixed with grey and the flanks retain some black mottling or barring). Males resemble S. c... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Panama City | 🇵🇦 Panama | |
| 2 | Guayaquil | 🇪🇨 Ecuador | |
| 3 | San Pedro Sula | 🇭🇳 Honduras | |
| 4 | San José | 🇨🇷 Costa Rica |
Rare
Under 5% of wildlife watchers report a Variable Seedeater sighting in San José on a given day, based on 522 verified sightings from GBIF citizen-science data. It is the 107th most-seen of the 379 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.
September
In that month about 10% of wildlife watchers report a Variable Seedeater 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 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Variable Seedeater 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 Variable Seedeater sightings, San José ranks 4th at under 5%. The best odds are in Panama City (Panama, about 30%), Guayaquil (Ecuador, about 20%) and San Pedro Sula (Honduras, under 5%).
GBIF citizen-science records
It is estimated from how often the Variable Seedeater is recorded against all the birds logged in San José (522 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.
