The lesser noctule, also known as Leisler’s bat or the Irish bat, is a remarkable insectivorous mammal belonging to the vesper bat family, Vespertilionidae. This species was named in honor of the naturalist Johann Philipp Achilles Leisler.
Description
The lesser noctule is a medium-sized bat, slightly smaller than the common noctule. It typically measures between 48 to 68 mm in length (head and body) and has a wingspan of 260 to 330 mm. This species possesses relatively long and narrow wings, a morphology known as high aspect ratio, which allows for great speed and endurance during flight.
Appearance
The lesser noctule can be distinguished by its medium size and characteristic long, narrow wings. Its fur coloration can vary, but it generally presents as a mix of brown and grey tones, often with a paler underside. These distinguishing features set it apart from other bat species within its range.
Distribution
The lesser noctule is found across various regions in Europe, including parts of the United Kingdom, Ireland, and other European countries. It also extends into parts of Asia. This species demonstrates a preference for wooded areas, river valleys, and pastures, where it forages for its insect prey.
Habitat Preferences
The lesser noctule thrives in diverse habitats, ranging from woodland areas to river valleys. It is often found foraging over these landscapes, preying on flies, moths, and beetles. The species’ ability to adapt to a range of ecosystems contributes to its survival and well-being.
By understanding the unique characteristics, distribution, and habitat preferences of the lesser noctule, conservation efforts can be effectively targeted to ensure the continued well-being of this fascinating species.
Facts About Lesser noctule
- The Lesser noctule bat (Nyctalus leisleri) has a wingspan ranging from 260-320 mm (10.2-12.6 inches).
- It is a medium-sized bat species, weighing between 11-20 grams (0.4-0.7 ounces).
- Lesser noctule bats primarily feed on moths, flies, mosquitoes, and flying beetles.
- These bats are known for their distinctive high aspect ratio wings, allowing for great speed and endurance in flight.
- The species is typically found in woodland, parkland, treelines, pasture, riparian habitats, and near lakes, beaches, and dunes.
- Lesser noctule bats are nocturnal, hunting exclusively while flying above the tree canopy.
- They are distinguishable from the noctule bat by their smaller size (forearm less than 47mm) and darker fur color at the base.
- The conservation status of the Lesser noctule bat is of concern, with populations facing threats and challenges.
- Lesser noctule bats are native to various regions, including the UK, Ireland, and other parts of Europe.
- Nyctalus leisleri is a fascinating species that contributes to the biodiversity and ecological balance of its habitats.