Streptoprocne zonaris
Silhouette: Aviceda (vectorized by T. Michael Keesey) · PhyloPic
In 3 days ~50% in a week ~80%
The white-collared swift (Streptoprocne zonaris) is a species of bird in the subfamily Cypseloidinae of the swift family Apodidae. It is found in Mexico, Central America, the Greater and Lesser Antilles, Trinidad, and every mainland South American country.
The white-collared swift is the largest species of swift in its range except in northwestern Mexico, where it and the slightly larger white-naped swift (S. semicollaris) are sympatric. The white-collared swift is 20 to 21.5 cm (7.9 to 8.5 in) long and weighs 90 to 125 g (3.2 to 4.4 oz). It has a wingspan of 45 to 55 cm (18 to 22 in). It has a very slightly forked tail and the sexes have the same plumage. Adults have a white collar that circles the neck and is broadest on the breast. Their forehead is sooty, most of the head dark sooty black, the tail... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cali | 🇨🇴 Colombia | |
| 2 | San José | 🇨🇷 Costa Rica | |
| 3 | Quito | 🇪🇨 Ecuador | |
| 4 | Santa Cruz de la Sierra | 🇧🇴 Bolivia | |
| 5 | Curitiba | 🇧🇷 Brazil | |
| 6 | San Pedro Sula | 🇭🇳 Honduras | |
| 7 | Cochabamba | 🇧🇴 Bolivia | |
| 8 | Guatemala City | 🇬🇹 Guatemala | |
| 9 | Caracas | 🇻🇪 Venezuela | |
| 10 | Rio de Janeiro | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report a White-collared Swift sighting in Arenal Volcano National Park on a given day, based on 2,946 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 79th most-seen of the 503 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
April
In that month about 30% of wildlife watchers report a White-collared Swift in Arenal Volcano National Park on a given day, against about 10% in June and August–September, the lowest months. That is one of Arenal Volcano National Park's driest months, with about 140 mm of rain against 500 mm in November.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most White-collared Swift sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
13th of 64
Of the 64 parks where we can rate White-collared Swift sightings, Arenal Volcano National Park ranks 13th at about 20%. The best odds are in Serra dos Órgãos National Park (Brazil, about 30%), Serra da Canastra National Park (Brazil, about 30%) and Pico Bonito National Park (Honduras, about 30%).
GBIF citizen-science records
It is estimated from how often the White-collared Swift is recorded against all the birds logged in Arenal Volcano National Park (2,946 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.
