Myocastor coypus
Silhouette: Mattia Menchetti · PhyloPic
In 3 days ~70% in a week ~90%
The nutria or coypu (Myocastor coypus) is an herbivorous, semiaquatic rodent native to South America. Classified for a long time as the only member of the family Myocastoridae, Myocastor has since been included within Echimyidae, the family of the spiny rats.
The nutria lives in burrows alongside stretches of water and feeds mainly on aquatic and riparian vegetation. In its native range it forms part of South American wetland food webs and can contribute to the dispersal of aquatic plants and spores.
Native to subtropical and temperate South America, it was introduced to North America, Europe and Asia, primarily by fur farmers. Although it is still hunted and trapped for its fur in some regions, introduced populations can damage wetland vegetation and infrastructure through feeding and burrowing, and the species is considered invasive in several countries. Some populations can carry some zoonotic pathogens, including pathogenic Leptospira, although their epidemiological significance is scarce and region-specific.
The genus name Myocastor derives from the two Ancient Greek words μῦς (mûs) 'rat, mouse', and κάστωρ (kástōr) 'beaver'. Therefore, the name Myocastor... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Camargue | 🇫🇷 France | |
| 2 | Fertő-Hanság National Park | 🇭🇺 Hungary | |
| 3 | Cévennes National Park | 🇫🇷 France | |
| 4 | Pyrénées National Park | 🇫🇷 France | |
| 5 | Big Bend National Park | 🇺🇸 United States | |
| 6 | Wadden Sea National Park | 🇩🇪 Germany |
No species of the same family or order lives in Osaka, so these are its closest relatives here: other mammals.
Possible
About 30% of wildlife watchers report a Coypu sighting in Osaka on a given day, based on 185 verified sightings from GBIF citizen-science data. It is the 2nd most-seen of the 8 mammals we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
May and December–February
In those months about 40% of wildlife watchers report a Coypu in Osaka on a given day, against about 20% in September, the lowest month.
Between 5 and 8 pm
Across all the parks we cover, that three-hour window holds the most Coypu sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
5th of 26
Of the 26 cities where we can rate Coypu sightings, Osaka ranks 5th at about 30%. The best odds are in Prague (Czechia, about 60%), Turin (Italy, about 50%) and Buenos Aires (Argentina, about 40%).
GBIF citizen-science records
It is estimated from how often the Coypu is recorded against all the mammals logged in Osaka (185 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.
