Cranioleuca obsoleta
Silhouette: Sheatherius · PhyloPic
In 3 days ~40% in a week ~70%
The olive spinetail (Cranioleuca obsoleta) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Argentina, Brazil, and Paraguay. The olive spinetail is monotypic. It is closely related to the sister species stripe-crowned spinetail (C. pyrrhophia) and pallid spinetail (C. pallida). The olive and stripe-crowned spinetails hybridize in southern Brazil.
The olive spinetail is 12.5 to 15 cm (4.9 to 5.9 in) long and weighs 12 to 16 g (0.42 to 0.56 oz). It is a smallish, short-billed, member of genus Cranioleuca. The sexes have the same plumage. Adults have a whitish supercilium, a dull brown band behind the eye, buff and brown streaky ear coverts, and a plain buff malar area. Their forehead is streaked brown and buff, their crown is dull brownish olive, and their back and rump are a slightly richer brown. Their tail is chestnut-rufous; the feathers are graduated and lack barbs at the end giving a spiky appearance. Their wing coverts are dark chestnut-rufous, their primary coverts dark brown, and their flight feathers warm brown. Their throat is whitish, their breast buffy brownish, their belly... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iberá National Park | 🇦🇷 Argentina | |
| 2 | Iguaçu National Park | 🇧🇷 Brazil | |
| 3 | Iguazú National Park | 🇦🇷 Argentina |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Curitiba | 🇧🇷 Brazil | |
| 2 | Porto Alegre | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report an Olive Spinetail sighting in Porto Alegre on a given day, based on 313 verified sightings from GBIF citizen-science data. It is the 48th most-seen of the 159 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
May and June
In those months about 30% of wildlife watchers report an Olive Spinetail in Porto Alegre on a given day, against about 10% in January–February and October, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Olive Spinetail sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 cities where we can rate Olive Spinetail sightings, Porto Alegre ranks 2nd at about 20%. The best odds are in Curitiba (Brazil, about 30%).
Same family: Furnariidae
The closest relatives of the Olive Spinetail that you can see in Porto Alegre (family Furnariidae, Ovenbirds and Woodcreepers) are Rufous Hornero (about 90%), Spix's Spinetail (about 10%) and Yellow-chinned Spinetail (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Olive Spinetail is recorded against all the birds logged in Porto Alegre (313 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.
