What are the chances of seeing a Blue-vented Hummingbird in Ostional Wildlife Refuge?
With luck
About 10% of wildlife watchers report a Blue-vented Hummingbird sighting in Ostional Wildlife Refuge on a given day, based on 67 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 72nd most-seen of the 182 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
When is the best time to see a Blue-vented Hummingbird in Ostional Wildlife Refuge?
October and November
In those months about 30% of wildlife watchers report a Blue-vented Hummingbird in Ostional Wildlife Refuge on a given day, against under 5% in February, April, June–July and September, the lowest months. Those are among Ostional Wildlife Refuge's wettest months, with about 450 mm of rain a month against 15 mm in February.
What time of day is best to see a Blue-vented Hummingbird?
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Blue-vented Hummingbird sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Is Ostional Wildlife Refuge the best place to see a Blue-vented Hummingbird?
6th of 16
Of the 16 parks where we can rate Blue-vented Hummingbird sightings, Ostional Wildlife Refuge ranks 6th at about 10%. The best odds are in Monteverde Cloud Forest Reserve (Costa Rica, about 20%), Rincón de la Vieja National Park (Costa Rica, about 20%) and Santa Rosa National Park (Costa Rica, about 20%).
Which relatives of the Blue-vented Hummingbird live in Ostional Wildlife Refuge?
Same family: Trochilidae
The closest relatives of the Blue-vented Hummingbird that you can see in Ostional Wildlife Refuge (family Trochilidae, Hummingbirds) are Cinnamon Hummingbird (about 20%), Rufous-tailed Hummingbird (about 20%) and Canivet's Emerald (about 10%), with each one's daily chance of a sighting.
Where does the Blue-vented Hummingbird sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Blue-vented Hummingbird is recorded against all the birds logged in Ostional Wildlife Refuge (67 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.