Cettia cetti
Silhouette: Jiekun He · PhyloPic
In 3 days ~20% in a week ~40%
Cetti's warbler (Cettia cetti) is a small, brown warbler in the family Cettiidae, which breeds in southern and western Europe, northwest Africa and the east Palearctic as far as Afghanistan and northwest Pakistan. The sexes are alike. The bird is named after the 18th-century Italian zoologist, Francesco Cetti. This species is often difficult to see because of its skulking habits.
Cetti's warbler was described in 1820 by the Dutch zoologist Coenraad Jacob Temminck from specimens collected by Alberto della Marmora in Sardinia. Temminck coined the binomial name Sylvia cetti. The specific epithet was chosen to commemorate the Italian zoologist Francesco Cetti. Cetti's warbler is now placed in the genus Cettia that was erected in 1834 by the French ornithologist Charles Lucien Bonaparte, a nephew of Napoleon, with Cetti's warbler as the type species.
The phylogenetic relationships among the Cettia species are shown below, based on the data by the Cornell Lab of Ornithology. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Camargue | 🇫🇷 France | |
| 2 | Doñana National Park | 🇪🇸 Spain | |
| 3 | Monfragüe National Park | 🇪🇸 Spain | |
| 4 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 5 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 6 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 7 | Aigüestortes National Park | 🇪🇸 Spain | |
| 8 | Cévennes National Park | 🇫🇷 France | |
| 9 | Wadden Sea National Park | 🇩🇪 Germany | |
| 10 | Picos de Europa National Park | 🇪🇸 Spain | |
| 11 | Pyrénées National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Cetti's Warbler sighting in Sierra de Guadarrama National Park on a given day, based on 287 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 89th most-seen of the 202 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
January–June, September and November
In those months about 10% of wildlife watchers report a Cetti's Warbler in Sierra de Guadarrama National Park on a given day, against under 5% in July–August, October and December, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Cetti's Warbler sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
6th of 11
Of the 11 parks where we can rate Cetti's Warbler sightings, Sierra de Guadarrama National Park ranks 6th at about 10%. The best odds are in Camargue (France, about 60%), Doñana National Park (Spain, about 50%) and Monfragüe National Park (Spain, about 50%). All parks ranked.
Same order: Passeriformes
The closest relatives of the Cetti's Warbler that you can see in Sierra de Guadarrama National Park (order Passeriformes, Perching Birds) are Chaffinch (about 70%), Eurasian Blackbird (about 60%) and Great Tit (about 60%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cetti's Warbler is recorded against all the birds logged in Sierra de Guadarrama National Park (287 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.
