Glaucis aeneus
Silhouette: Ferran Sayol · PhyloPic
In 3 days <5% in a week ~10%
The bronzy hermit (Glaucis aeneus) is a species of hummingbird in the family Trochilidae. It is found in Colombia, Costa Rica, Ecuador, Honduras, Nicaragua, and Panama. The bronzy hermit and the rufous-breasted hermit (G. hirsutus) have been considered conspecific but now are treated as a superspecies. The bronzy hermit is monotypic although the separate Central and South American populations have sometimes been treated as subspecies.
The bronzy hermit is 9 to 10 cm (3.5 to 3.9 in) long. Males weigh 3 to 6.5 g (0.11 to 0.23 oz) and females 3 to 6 g (0.11 to 0.21 oz). The male's bill is decurved and the maxilla has serrated edges. The female's bill has more curve and no serrations. The sexes' plumages are alike, with bronzy or coppery green upperparts, deep buff thoat and breast, and pale buff belly. The face has a white "moustache" and is otherwise dusky. The upperside of the tail is gray-green with white tips and the underside reddish near the body, blackish in the middle, and white at the tips. The Central American population has slightly longer wings than the South American but their plumages are identical. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bastimentos Island National Marine Park | 🇵🇦 Panama | |
| 2 | Piedras Blancas National Park | 🇨🇷 Costa Rica | |
| 3 | Gandoca-Manzanillo Wildlife Refuge | 🇨🇷 Costa Rica | |
| 4 | Tortuguero National Park | 🇨🇷 Costa Rica | |
| 5 | La Amistad International Park (Panama) | 🇵🇦 Panama | |
| 6 | Corcovado National Park | 🇨🇷 Costa Rica | |
| 7 | Cahuita National Park | 🇨🇷 Costa Rica | |
| 8 | Marino Ballena National Park | 🇨🇷 Costa Rica | |
| 9 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 10 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 11 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 12 | Carara National Park | 🇨🇷 Costa Rica | |
| 13 | Manuel Antonio National Park | 🇨🇷 Costa Rica | |
| 14 | Volcán Barú National Park | 🇵🇦 Panama | |
| 15 | Poás Volcano National Park | 🇨🇷 Costa Rica |
Rare
Under 5% of wildlife watchers report a Bronzy Hermit sighting in Arenal Volcano National Park on a given day, based on 174 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 329th most-seen of the 503 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Bronzy Hermit in Arenal Volcano National Park on a given day, so our monthly data shows no clear season.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Bronzy Hermit sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
9th of 15
Of the 15 parks where we can rate Bronzy Hermit sightings, Arenal Volcano National Park ranks 9th at under 5%. The best odds are in Bastimentos Island National Marine Park (Panama, about 20%), Piedras Blancas National Park (Costa Rica, about 10%) and Gandoca-Manzanillo Wildlife Refuge (Costa Rica, about 10%).
Same family: Trochilidae
The closest relatives of the Bronzy Hermit that you can see in Arenal Volcano National Park (family Trochilidae, Hummingbirds) are Rufous-tailed Hummingbird (about 70%), Violet-headed Hummingbird (about 40%) and Scaly-breasted Hummingbird (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bronzy Hermit is recorded against all the birds logged in Arenal Volcano National Park (174 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.
