Smaller Mammals

Smaller Mammals of Mountain Lakes

It is not unusual to see small wildlife in backyards and despite complaints about squirrels that ravage birdfeeders, ground hogs that can’t be convinced to re-locate and muskrats that burrow into lakeside boundaries, residents and small critters seem to co-exist fairly well.  This co-existence is probably helped by the fact that given the shade and the difficult soil, it is next to impossible to have a vegetable garden in town!

In late 2011 there were reports of missing cats and small dogs thought to perhaps have fallen prey to fox.

Probable Mammals Found in Mountain Lakes
Species:  Big Brown Bat
Scientific Name:  Eptisicus fuscus
Status in Mountain Lakes:  Probable; occurs at the Tourne and in Rockaway.  A common species.

Possible Mammals Found in Mountain Lakes
Species:  Masked Shrew
Scientific Name:  Sorex cinerereus
Status in Mountain Lakes:  Possible; within the species’ documented range in the state.  It may occur in larger tracts such as Wilcox and Frederick Parks, and the Yorke Road and Tower hill woodlands.  The most likely site is the red maple swamp and marsh along the western edge Morris Avenue in Frederick Park, as the species prefers wetland habitats.

Species:  Short-tailed Shrew
Scientific Name:  Blarina brevicauda
Status in Mountain Lakes:  A dead short-tailed shrew was found in the parking area of Birchwood Lake in 2007.  This species is possible in wet areas around the Borough’s lakes and ponds and in wetland areas of Wilcox and Frederick Parks and in the Yorke Road and Tower Hill woodlands

Species:  White-footed Mouse
Scientific Name:  Peromyscus leucopus
Status in Mountain Lakes:  Possible.  Within the species’ range and habitat requirements.

Species:  Meadow Vole, Woodland Vole
Scientific Name:  Microtus pennsylvanicus; M. pinetorium
Status in Mountain Lakes:  Possible, within the species’ ranges and habitat requirements.

Species:  Porcupine
Scientific Name:  Erithizon dorsatum
Status in Mountain Lakes:  Possible in wooded areas.  Seen recently in Rockaway Township and in Denville near the Tourne.

Species:  Gray Fox
Scientific Name:  Urocyon cinereoargenteus
Status in Mountain Lakes:  Reported to be in the Borough, but not verified.
Comments: Much less common than Red Fox, throughout the state.

Species:  Long-tailed Weasel
Scientific Name:  Mustela frenata
Status in Mountain Lakes:  Possible.  Occurs in the nearby Tourne county park, and in Rockaway Township.

Species:  Little Brown Myotis, Little Brown Bat
Scientific Name:  Myotis lucifugus
Status in Mountain Lakes:  Possible.  Occurs in the Hibernia bat hibernaculum.

Species:  Indiana Bat
Scientific Name:  Myotis sodalis
State Status:  Endangered;  Federal endangered species; Heritage Program rank S1.
Status in Mountain Lakes:  Possible because it overwinters in the Hibernia and Picatinny hibernacula.

Species:  Keen’s Myotis
Scientific Name:  Myotis septentrionalis
Status in Mountain Lakes: Possible; occurs in the Hibernia hibernaculum.

Species:  Small-footed Myotis
Scientific Name:  Myotis leebii
Status in Mountain Lakes:  Possible; occurs in the Hibernia hibernaculum.

Species:  Silver-haired Bat
Scientific Name:  Lasionycteris noctivagans
State Status:  None.  Heritage Program rank SU
Status in Mountain Lakes:  Possible; a migratory species in northern New Jersey.

Species:  Eastern Pipistrel
Scientific Name:  Pipistrellus subflavus
State Status:  Heritage Program rank SU.
Status in Mountain Lakes:  Possible; occurs in the Hibernia site.

Species:  Hoary Bat
Scientific Name:   Lasisurus cinereus
State Status:  Heritage Program Rank SU.
Status in Mountain Lakes:  Possible; a rare migratory species.