Eutoxeres aquila
Silhouette: Emma Hughes · PhyloPic
In 3 days <5% in a week ~10%
The white-tipped sicklebill (Eutoxeres aquila) is a species of hummingbird in the family Trochilidae. It is found in Colombia, Costa Rica, Ecuador, Panama, Peru, and Venezuela. The white-tipped sicklebill shares the genus Eutoxeres with the buff-tailed sicklebill (E. condamini).
The white-tipped sicklebill's most prominent feature is its strongly decurved bill that arcs through a quarter circle; the maxilla is jello and the mandible yellow. The species is about 11.5 to 13.5 cm (4.5 to 5.3 in) long and weighs about 8.6 to 14.5 g (0.30 to 0.51 oz). The sexes are alike in plumage. Adults' upperparts are green, their throat and chest blackish, and the rest of the underparts striped green and white. The tail is mostly green, with the outer pair of feathers more dusky with white tips. Juveniles appear scaly. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 2 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 3 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 4 | Podocarpus National Park | 🇪🇨 Ecuador | |
| 5 | Chirripó National Park | 🇨🇷 Costa Rica | |
| 6 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 7 | Corcovado National Park | 🇨🇷 Costa Rica | |
| 8 | Chagres National Park | 🇵🇦 Panama | |
| 9 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica | |
| 10 | La Amistad International Park (Panama) | 🇵🇦 Panama |
Rare
Under 5% of wildlife watchers report a White-tipped Sicklebill sighting in Braulio Carrillo National Park on a given day, based on 73 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 356th most-seen of the 505 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
February
In that month about 10% of wildlife watchers report a White-tipped Sicklebill in Braulio Carrillo National Park on a given day, against under 5% in March to January, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most White-tipped Sicklebill sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 10 parks where we can rate White-tipped Sicklebill sightings, Braulio Carrillo National Park ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Tenorio Volcano National Park (Costa Rica, under 5%).
Same family: Trochilidae
The closest relatives of the White-tipped Sicklebill that you can see in Braulio Carrillo National Park (family Trochilidae, Hummingbirds) are Rufous-tailed Hummingbird (about 50%), Green Hermit (about 30%) and Violet-headed Hummingbird (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-tipped Sicklebill is recorded against all the birds logged in Braulio Carrillo National Park (73 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.
