Keen’s Myotis

Common Name: Keen’s Myotis
Scientific Name: Myotis keenii

Habitat

Keen’s Myotis is primarily found in the Pacific Northwest region of North America, including areas such as Washington, Oregon, and northern California. These bats typically inhabit mature forests, especially near water sources like rivers, lakes, and wetlands. They prefer environments with ample roosting sites, such as tree cavities and buildings, and are often found in temperate climates that provide suitable temperatures for foraging and roosting.

Physical Characteristics

Keen’s Myotis is a small bat species, with an average wingspan of about 24 to 27 centimeters and a body length ranging from 8 to 11 centimeters. Its fur is typically dark brown or reddish-brown, with a lighter underside. Distinguished by its large ears and long, narrow wings, the Keen’s Myotis possesses a unique characteristic: a distinctively shaped face with a pronounced nose and large eyes, allowing for effective navigation and hunting in low-light conditions.

Behavior

Keen’s Myotis is known for its nocturnal behavior, primarily foraging at dusk and dawn. These bats rely on echolocation to navigate and hunt for prey. They are often seen flying at lower altitudes, near water sources, where they hunt for insects. Socially, Keen’s Myotis may roost in small colonies where they exhibit a range of social behaviors, including grooming and vocalizations.

Diet

The diet of Keen’s Myotis primarily consists of flying insects, including moths, beetles, and mosquitoes. They are insectivorous bats that actively hunt and consume large quantities of insects during their foraging hours. Their feeding habits play a critical role in controlling insect populations, contributing positively to the ecosystem.

Reproduction

Keen’s Myotis typically breeds in late spring to early summer. Female bats give birth to one pup per season, with the young being born in late June or early July. The pups are nursed for several weeks and begin to develop flying skills by late summer. Parental care is strong among females, who often roost together in colonies to provide warmth and protection for their young.

Conservation Status

Currently, Keen’s Myotis is listed as a species of *Concern* by various wildlife conservation organizations due to habitat loss and other environmental threats. Its population is monitored closely, as it is vulnerable to changes in its habitat that may affect its survival. Conservation efforts are essential to protect this species and ensure its continued presence in its natural habitats.

Interesting Facts

Keen’s Myotis is one of the lesser-known bat species, often overshadowed by larger, more commonly recognized bats. Their echolocation abilities are exceptional, enabling them to detect prey and navigate through dense forest environments. Additionally, these bats can live up to 20 years in the wild, which is notable for their size.

Role in Ecosystem

Keen’s Myotis plays a vital role in the ecosystem as a natural pest control agent. By preying on various insects, they help maintain balanced insect populations, which is critical for agricultural health and the overall biodiversity of their habitats. Their presence indicates a healthy, functioning ecosystem, as they contribute to pest control and the pollination of certain plant species.