Thamnophis scalaris
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~10% in a week ~30%
The longtail alpine garter snake (Thamnophis scalaris) is a species of snake of the family Colubridae. It is found in Mexico. Species Thamnophis scalaris at The Reptile Database Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toluca | 🇲🇽 México | |
| 2 | Mexico City | 🇲🇽 México |
Rare
Under 5% of wildlife watchers report a Longtail Alpine Garter Snake sighting in Mexico City on a given day, based on 31 verified sightings from GBIF citizen-science data. It is the 21st most-seen of the 37 reptiles we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
April, July and September–October
In those months about 10% of wildlife watchers report a Longtail Alpine Garter Snake in Mexico City on a given day, against under 5% in May–June, August and November–March, the lowest months. Those are among Mexico City's wettest months, with about 95 mm of rain a month against 5 mm in December.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Longtail Alpine Garter Snake sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
2nd of 2
Of the 2 cities where we can rate Longtail Alpine Garter Snake sightings, Mexico City ranks 2nd at under 5%. The best odds are in Toluca (México, about 30%).
Same genus: Thamnophis
The closest relatives of the Longtail Alpine Garter Snake that you can see in Mexico City (genus Thamnophis, Garter Snakes) are Blackbelly Garter Snake (about 10%), Mexican Gartersnake (about 10%) and Short-tail Alpine Garter Snake (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Longtail Alpine Garter Snake is recorded against all the reptiles logged in Mexico City (31 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.
