Streptoprocne rutila
Silhouette: Aviceda (vectorized by T. Michael Keesey) · PhyloPic
In 3 days ~10%
The chestnut-collared swift (Streptoprocne rutila) is a species of bird in subfamily Cypseloidinae of the swift family Apodidae. It is found from Mexico and Trinidad south to Peru and Bolivia. The chestnut-collared swift has at various times been placed in genera Cypseloides and Chaetura.
The chesnut-collared swift is one of the smaller members of genus Streptoprocne. It is 12 to 14 cm (4.7 to 5.5 in) long and weighs about 21 g (0.74 oz). It has a wide slightly notched tail and broad wings. Adult males of the nominate subspecies S. r. rutila have a sooty blackish brown crown, a blackish brown back, slightly paler rump and uppertail coverts, and a sooty blackish brown tail. They have a narrow black patch around the eye and grayish brown cheeks, chin, and throat with... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San José | 🇨🇷 Costa Rica | |
| 2 | Medellín | 🇨🇴 Colombia | |
| 3 | Guayaquil | 🇪🇨 Ecuador | |
| 4 | Cali | 🇨🇴 Colombia | |
| 5 | Guatemala City | 🇬🇹 Guatemala | |
| 6 | Mexico City | 🇲🇽 México |
Rare
Under 5% of wildlife watchers report a Chestnut-collared Swift sighting in Gandoca-Manzanillo Wildlife Refuge on a given day, based on 25 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 251st most-seen of the 329 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Chestnut-collared Swift in Gandoca-Manzanillo Wildlife Refuge on a given day, against under 5% in August to May, the lowest months. That is one of Gandoca-Manzanillo Wildlife Refuge's wettest months, with about 560 mm of rain against 140 mm in March.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Chestnut-collared Swift 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 Chestnut-collared Swift sightings, Gandoca-Manzanillo Wildlife Refuge ranks 12th at under 5%. The best odds are in El Triunfo (Mexico, about 10%), Podocarpus National Park (Ecuador, about 10%) and Henri Pittier National Park (Venezuela, under 5%).
GBIF citizen-science records
It is estimated from how often the Chestnut-collared Swift is recorded against all the birds logged in Gandoca-Manzanillo Wildlife Refuge (25 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.
