Eurycea bislineata
Silhouette: Andy Wilson · PhyloPic
In 3 days ~10% in a week ~30%
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 |
Rare
Under 5% of wildlife watchers report a Northern Two-lined Salamander sighting in New York City on a given day, based on 87 verified sightings from GBIF citizen-science data. It is the 8th most-seen of the 14 amphibians 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.
June and August
In those months about 10% of wildlife watchers report a Northern Two-lined Salamander in New York City on a given day, against under 5% in July and September–May, 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.
5th of 5
Of the 5 cities where we can rate Northern Two-lined Salamander sightings, New York City ranks 5th at under 5%. The best odds are in Washington (United States, about 10%), Philadelphia (United States, about 10%) and Baltimore (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Northern Two-lined Salamander is recorded against all the amphibians logged in New York City (87 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.
