New York Natural Heritage Program
Little Brown Bat
Myotis lucifugus (Le Conte, 1831)
Mammals
Family: Evening Bats and Vesper Bats (Vespertilionidae)

State Protection: Not Listed
The species is not listed or protected by New York State.

Federal Protection: Not Listed

State Rarity Rank: S1S2
A State Rarity Rank of S1S2 means: Critically Imperiled or Imperiled in New York - Especially or very vulnerable to disappearing from New York due to rarity or other factors; typically 20 or fewer populations or locations in New York, very few individuals, very restricted range, few remaining acres (or miles of stream), and/or steep declines. More information is needed to assign a single conservation status.

Global Rarity Rank: G3
A Global Rarity Rank of G3 means: Either rare and local throughout its range (21 to 100 occurrences), or found locally (even abundantly at some of its locations) in a restricted range (e.g. a physiographic region), or vulnerable to extinction throughout its range because of other factors.


Did you know?
The little brown myotis has been heavily impacted by white-nose syndrome, a disease caused by a fungus that grows on their nose and wing membranes. Prior to 2006, they were the most common bat in the state but became rare throughout most of the state by 2010.

State Ranking Justification [-]
Little brown myotis was very common in New York prior to the appearance of white-nose syndrome in 2006. Only approximately 10% of the statewide numbers remain (NYSDEC 2012).

Short-term Trends [-]

Long-term Trends [-]