Northern bat
species of mammal
The northern bat (Eptesicus nilssonii) is the most abundant species of bat in northern Eurasia occurring from France to Hokkaidō and south to Kazakhstan.
Description
The northern bat is dark brown or black with some gold touched at the tip of the hairs in the head and back region. Its nose, ears, tail and wings are black or blackish brown. The coat on the ventral side is yellowish brown. It has short and rounded ears. It body length is 54–64 mm (2.1–2.5 in) with a wing span of 240–280 mm (9.4–11.0 in), and it weighs 8–16 g (0.28–0.56 oz) depending on the season.
Distribution and habitat
The northern bat is widespread throughout Eurasia, and is the most common bat in the northern part of the continent. It occurs from northern Scandinavia beyond the Arctic Circle to northern Italy, and eastern England to northern Japan. It favours forest uplands at elevations of 200–2,000 m (660–6,560 ft).
Behaviour and ecology
Northern bat colonies have moved as far as 450 km (280 mi) over a period of several years.
This brief starts where responsible research should: with the source description of “Northern bat” as species of mammal. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the science & nature register because the source frames it as species of mammal. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 11, 2026. The linked authority identifier is Q300941. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Northern bat” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.