Eurycea bislineata
Silhouette: Andy Wilson · PhyloPic
In 3 days ~80% in a week >90%
The northern two-lined salamander (Eurycea bislineata) is a species of salamander in the family Plethodontidae found in Canada and the United States. Its natural habitats are temperate forests, temperate shrubland, rivers, intermittent rivers, freshwater marshes, freshwater springs, arable land, and urban areas. It is more water-oriented than the related northern redback salamander, and can often be found in and around water such as rain puddles, streams, swamps, and damp stream beds, whereas the northern redback tends to be found in damp ground, but usually not near open water.
The northern two-lined salamander is a small salamander, with adults ranging from 65–120 mm in total length. This salamander is yellow or yellowish-brown, with two black stripes running down the back which tends to break up after the base of the tail. The flanks are mottled grayish or brown. The belly is pale yellowish, nearly transparent. There are four toes on the fore feet and five toes on the hind feet. On the side of the body are 14–16 costal grooves.
This species prefers small rocky streams or seeps in forests, but may occur in moist areas far from running... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Acadia National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Washington | 🇺🇸 United States | |
| 2 | Philadelphia | 🇺🇸 United States | |
| 3 | Baltimore | 🇺🇸 United States | |
| 4 | Boston | 🇺🇸 United States | |
| 5 | New York City | 🇺🇸 United States |
Likely
About 40% of wildlife watchers report a Northern Two-lined Salamander sighting in Shenandoah National Park on a given day, based on 177 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 5th most-seen of the 20 amphibians we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
October
In that month about 60% of wildlife watchers report a Northern Two-lined Salamander in Shenandoah National Park on a given day, against under 5% in November to January, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Northern Two-lined Salamander sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Northern Two-lined Salamander sightings, Shenandoah National Park has the highest daily chance: about 40%. Next come Acadia National Park (United States, under 5%).
Same genus: Eurycea
The closest relatives of the Northern Two-lined Salamander that you can see in Shenandoah National Park (genus Eurycea, Brook Salamanders) are Long-tailed Salamander (about 20%) and Southern Two-lined Salamander (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Northern Two-lined Salamander is recorded against all the amphibians logged in Shenandoah National Park (177 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.
