Bats
Gray Bat
Seasonal Restriction Dates:
- March 15 - November 14
Restriction Notes:
- If bridges or culverts, will be impacted/removed.
- If there will be tree or ground disturbance within 300 ft of OHWM & project footprint is within 10 mi. of known occupancy.
- May survey to remove restriction.
Photo Credit: USFWS
Short Description from Oklahoma Wildlife Conservation:
The gray bat (Myotis grisescens) is a medium-sized bat, approximately 3.5 inches long with a wingspan of 11-13 inches. It weighs about half an ounce. This bat can be found in the same areas as other Myotis, but is distinguished by the uniformly- colored hair shafts that range in color from gray to reddish-brown.
Natural Habitat:
Caves, rock overhangs.
Anthropogenic Habitat:
Culverts, bridges, old buildings.
Indiana Bat
Seasonal Restriction Dates:
- March 15 - November 14
Restriction Notes:
- If bridges, culverts, or trees will be impacted/ removed (can survey in advance to potentially remove seasonal restriction.
Photo Credit: ODWC
Short Description from Oklahoma Wildlife Conservation:
The Indiana Bat (Myotis sodalis) is a medium-sized bat that is 4-5 inches long with a wingspan of approximately 9-10 inches. Similar in appearance to other Myotis bats, the Indiana bat can be distinguished by the dull lead color of the base of the dorsal hairs. The ear, wing and tail membrane is pinkish.
Natural Habitat:
Caves, Trees.
Anthropogenic Habitat:
Culverts, bridges, old buildings.
Northern Long-eared Bat
Seasonal Restriction Dates:
- March 15 - November 14
Restriction Notes:
- If nesting habitat present within 660-ft and nesting activities could be impacted.
Photo Credit: USFWS
Short Description from Oklahoma Wildlife Conservation:
The Northern Long-eared Bat (Myotis septentrionalis) is a medium-sized bat about 3-3.7 inches long, with a wingspan of 9-10 inches and an average weight of a quarter of an ounce. Its fur can vary in color between medium and dark brown. The northern long-eared bat can be distinguished from other members in the genus Myotis by the ear length, which extends past the tip of the nose when laid forward.
Natural Habitat:
Caves, Trees.
Anthropogenic Habitat:
Culverts, bridges, old buildings.
Ozark Big-eared Bat
Seasonal Restriction Dates:
- March 15 - November 14
Restriction Notes:
- If bridges, culverts, or trees will be impacted/ removed.
- If within 2.5 mi of karst cave feature.
- May survey to remove restriction.
Photo Credit: USFWS
Short Description from Oklahoma Wildlife Conservation:
The Ozark big-eared bat (Corynorhinus townsendii ingens) is the largest subspecies of the Townsend’s big-eared bat species complex, which has a relatively wide distribution throughout both western and portions of eastern North America. It is a medium-sized bat with dark reddish-brown fur, large ears (about four times the length found on most Oklahoma bats), and two prominent lumps on the snout. Its weight varies between that of a U.S. quarter and half-dollar, with total length of 3.5-4.5 inches and has a wingspan of 11.5-12.5 inches.
Natural Habitat:
Caves, rock overhangs.
Anthropogenic Habitat:
Culverts, bridges, old buildings.
Tricolored Bat
Seasonal Restriction Dates:
- March 15 - November 14
Restriction Notes:
- If bridges, culverts, or trees will be impacted/ removed (can survey in advance to potentially remove seasonal restriction.
Photo Credit: ODWC
Short Description from Oklahoma Wildlife Conservation:
The Tricolored Bats (Perimyotis subflavus) are small bats that vary in color from pale yellow to golden-brown. In hand, the skin over the forearm bones is reddish, contrasting with black wing membranes. Each hair is tri-colored; grey at the base, light yellow in the middle with brown tips.
Natural Habitat:
Caves, tree foliage.
Anthropogenic Habitat:
Culverts, bridges, old buildings.
