What are the chances of seeing an Eastern Black-tailed Rattlesnake in Cumbres de Monterrey National Park?
With luck
About 10% of wildlife watchers report an Eastern Black-tailed Rattlesnake sighting in Cumbres de Monterrey National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 31st most-seen of the 43 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
When is the best time to see an Eastern Black-tailed Rattlesnake in Cumbres de Monterrey National Park?
June–September and November
In those months about 10% of wildlife watchers report an Eastern Black-tailed Rattlesnake in Cumbres de Monterrey National Park on a given day, against under 5% in October and December–May, the lowest months.
What time of day is best to see an Eastern Black-tailed Rattlesnake?
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Eastern Black-tailed Rattlesnake sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is seen both by day and at night.
Is Cumbres de Monterrey National Park the best place to see an Eastern Black-tailed Rattlesnake?
3rd of 3
Of the 3 parks where we can rate Eastern Black-tailed Rattlesnake sightings, Cumbres de Monterrey National Park ranks 3rd at about 10%. The best odds are in Big Bend National Park (United States, about 30%) and Guadalupe Mountains National Park (United States, about 30%).
Which relatives of the Eastern Black-tailed Rattlesnake live in Cumbres de Monterrey National Park?
Same genus: Crotalus
The closest relatives of the Eastern Black-tailed Rattlesnake that you can see in Cumbres de Monterrey National Park (genus Crotalus, Rattlesnakes) are Tamaulipan Rock Rattlesnake (about 10%), Totonacan Rattlesnake (about 10%) and Rock Rattlesnake (about 10%), with each one's daily chance of a sighting.
Where does the Eastern Black-tailed Rattlesnake sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Eastern Black-tailed Rattlesnake is recorded against all the reptiles logged in Cumbres de Monterrey National Park (9 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.
