Sternula lorata
Silhouette: Sheatherius · PhyloPic
In 3 days <5%
The Peruvian tern (Sternula lorata) is a species of tern in the family Laridae. Found in northern Chile, Ecuador, and Peru, its natural habitats are hot deserts, sandy shores, and coastal saline lagoons. It is threatened by habitat loss.
In Spanish, it is known as the "charrancito Peruano" or "gaviotín chico". The Peruvian tern is a very small species with a length of about 24 cm (9.4 in). The upper half of the head and neck are black, and the remaining part of the head is white. The back, wings and tail are grey, the throat, chin and breast are white, and the chest, belly and flanks are pale grey. The under tail-coverts are white. The bill is yellow with a black tip, the irises are brown and the legs are yellowish. The pale grey underparts differentiate it from other small terns. It has a very rapid and characteristic wingbeat. The call is a shrill "kik" and a harsh "gree", and it also utters a descending series of "kee-ee-eer" notes.
This species is endemic to the tropical west coast of South America. Its range extends from north and central Ecuador, through Peru to northern Chile, as far south as the Mejillones Peninsula. Its status in Ecuador... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lima | 🇵🇪 Peru |
Rare
Under 5% of wildlife watchers report a Peruvian Tern sighting in Lima on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 152nd most-seen of the 171 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 Peruvian Tern in Lima on a given day, so our monthly data shows no clear season.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Peruvian Tern 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 Lima, in our data
Lima is the only city on Wallace's Line with enough records to rate Peruvian Tern sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Laridae
The closest relatives of the Peruvian Tern that you can see in Lima (family Laridae, Gulls, Terns, and Skimmers) are Dominican Gull (about 30%), Belcher's Gull (about 30%) and Franklin's Gull (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Peruvian Tern is recorded against all the birds logged in Lima (14 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.
