Ramphocaenus melanurus
Silhouette: Sheatherius · PhyloPic
In 3 days <5%
The trilling gnatwren (Ramphocaenus melanurus), formerly long-billed gnatwren, is a very small bird in the gnatcatcher family. It found from southeast Mexico south to Ecuador and Amazonia. The trilling gnatwren was described by the French ornithologist Louis Pierre Vieillot in 1819 from a specimen collected in Brazil. He coined the binomial name Ramphocaenus melanurus. The genus name Ramphocaenus means "unusual beak", from the Ancient Greek rhamphos (ῥάµϕος, "beak") and cænos (καινός, "strange"). The specific epithet combines the Ancient Greek melas "black" and oura "tail". A molecular phylogenetic study published in 2018 found that two subspecies of Ramphocaenus melanurus formed a separate clade. The subspecies were split off to become the chattering gnatwren and the English name of this species was changed from "long-billed gnatwren" to "trilling gnatwren".
Thirteen subspecies are recognised: Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Belém | 🇧🇷 Brazil | |
| 2 | Caracas | 🇻🇪 Venezuela | |
| 3 | Valencia | 🇻🇪 Venezuela | |
| 4 | Maceió | 🇧🇷 Brazil | |
| 5 | San Salvador | 🇸🇻 El Salvador | |
| 6 | Cali | 🇨🇴 Colombia | |
| 7 | Panama City | 🇵🇦 Panama | |
| 8 | San José | 🇨🇷 Costa Rica |
Rare
Under 5% of wildlife watchers report a Long-billed Gnatwren sighting in San Salvador on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 119th most-seen of the 153 birds we can rate there. Over three days the chance rises to under 5%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Long-billed Gnatwren in San Salvador 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 Long-billed Gnatwren sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 8
Of the 8 cities where we can rate Long-billed Gnatwren sightings, San Salvador ranks 5th at under 5%. The best odds are in Belém (Brazil, about 10%), Caracas (Venezuela, about 10%) and Valencia (Venezuela, about 10%).
Same order: Passeriformes
The closest relatives of the Long-billed Gnatwren that you can see in San Salvador (order Passeriformes, Perching Birds) are Social Flycatcher (about 70%), Melodious Blackbird (about 70%) and Clay-colored Thrush (about 70%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Long-billed Gnatwren is recorded against all the birds logged in San Salvador (18 verified sightings), 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.
