Aphrastura spinicauda
Silhouette: Edwin Price · PhyloPic
In 3 days ~10% in a week ~20%
The thorn-tailed rayadito (Aphrastura spinicauda), is a species of bird in the family Furnariidae. It is found in temperate forests and subtropical dry shrubland south of 30°S. Some sources suggest it may formerly have occurred in the Falkland Islands. It remains the most common and best-known native bird in temperate forests of Zona Austral and Zona Sur in Chile, often occurring at densities of well over one individual per hectare.
The thorn-tailed rayadito was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with the wagtails in the genus Motacilla and coined the binomial name Motacilla spinicauda. Gmelin based his description on the "thorn-tailed warbler" that had been described and illustrated by the English ornithologist John Latham in his book A General Synopsis of Birds. The naturalist Joseph Banks had provided Latham with a water-colour drawing of the bird by Georg Forster who had accompanied James Cook on his second voyage to the Pacific Ocean. The picture was drawn in December 1774 at the Tierra del Fuego. This picture is held by the Natural History... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tierra del Fuego National Park | 🇦🇷 Argentina | |
| 2 | Vicente Pérez Rosales National Park | 🇨🇱 Chile | |
| 3 | Nahuel Huapi National Park | 🇦🇷 Argentina | |
| 4 | Torres del Paine National Park | 🇨🇱 Chile |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Santiago | 🇨🇱 Chile |
Rare
Under 5% of wildlife watchers report a Thorn-tailed Rayadito sighting in Santiago on a given day, based on 179 verified sightings from GBIF citizen-science data. It is the 54th most-seen of the 110 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Thorn-tailed Rayadito in Santiago on a given day, so our monthly data shows no clear season.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Thorn-tailed Rayadito sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Santiago, in our data
Santiago is the only city on Wallace's Line with enough records to rate Thorn-tailed Rayadito sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Thorn-tailed Rayadito is recorded against all the birds logged in Santiago (179 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.
