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Lasiurus borealis

(Eastern Red Bat;red Bat)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Czech:

netopýr rudohnědý

Common Names in Dutch:

Rode Vleermuis

Common Names in English:

eastern red bat, Eastern Red Bat;red Bat, red bat

Common Names in French:

chauve-souris rousse

Common Names in Spanish:

Murci, Murciélago-cola peluda rojizo

Description

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Physical Description

Species Lasiurus borealis

The Red Bat is 10.8 - 12.5 cm (4.3 - 4.9 in) in total length. The Red Bat varies from brick to rusty red. It has a thickly furred tail membrane .

Habitat

Red Bats spend their days hanging under the protective cover of tree leaves and clumps of Spanish Moss. The area directly beneath the roost must be unobstructed to allow the bats an easy drop at the beginning of their flight. Roosts are usually near a forest edge or body of water . The Red Bat typically roosts at heights of 1.5 - 6.1 m (5 - 20 ft ).

Typically found at an altitude of 0 to 3,333 meters (0 to 10,935 feet).[1]

Ecology: They tend to choose habitats that are sparsely to moderately populated by humans and are rare in heavily urbanized areas. Mating takes place in flight and copulation usually occurs in August or September. The sperm is stored until the spring , usually March or April. Female red bats possess four mammary glands while most other chiropterans have two. Female red bats give birth to one litter of twins each year, unlike most bats which give birth to single young. Newborn bats are hairless and weigh approximately 1.5 g. The young learn to fly at about five weeks old. Like all mammals, female red bats nurse their young until the young are able to fend for themselves. It takes young red bats about five weeks to learn how to fly and forage on their own (Myers and Hatchett 2000).
Lasiurus borealis choose roosting sites in dense foliage . They may be visible hanging from branches or leaves but their coloration helps to camouflage them from predators . Their red coat is particularly helpful at camouflaging them in sycamore, oaks, elm, and box elder trees and they seem to prefer these trees as roost sites (Constantine, 1996). Sites that have been used as roosting areas range from 2 to 40 feet off the ground . The roosting sites of solitary bats have not been as well studied as those of more gregarious bats. Some field workers believe that red bats defend feeding territories. (Constantine, 1966; Fenton, 1985)
Red bats are insectivorous . They capture insects while flying like many other insectivorous bats (Myers and Hatchett 2000). [2].

List of Habitats:

Biology

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Diet

Small beetles and moths.

Reproduction

Breeding occurs in autumn, and young are born the following spring . The Red Bat generally has four, more than any other bat in North America. Young are able to fly within 3 to 4 weeks. As with all bats the females carry the young only to move them to another roost. Females roost singly in both species and do not gather with other pregnant females to form a maternity colony ."

Behavior

Various hawks and owls, Blue Jays, and Rat Snakes are known to prey on these bats.

Taxonomy

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Synonyms

Lasiurus borealis (Muller 1776)

Notes

Name Status: Accepted Name .

Last scrutiny: 08-Jun-2004

Subgenus Lasiurus, borealis species group (Simmons 2005).[2].

Similar Species

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The Seminole Bat is indistinguishable in body size and shape from the Red Bat, but its fur is usually bright reddish orange to chestnut or rich mahogany brown, rather than the brick or rusty red of a Red Bat. The Northern Yellow Bat is a yellowish brown, and it has fur only on the basal (anterior) one-third to one-half of the dorsal surface of its tail membrane, rather than all the way to the edge as the Hoary Bat and Red Bat do.

Members of the genus Lasiurus

ZipcodeZoo has pages for 21 species and subspecies in this genus:

L. blossevillii (Western Red Bat) · L. borealis (Eastern Red Bat;red Bat) · L. borealis blossevillii (Eastern Red Bat) · L. borealis minor (Small Hairy-Tailed Bat) · L. brachyotis (Galapagos Bat) · L. castaneus (Tacarcunan Bat) · L. cinereus (Hawaiian Hoary Bat) · L. cinereus cinereus (Hoary Bat) · L. cinereus semotus (Hawaiian Hoary Bat) · L. degelidus (Jamaican Red Bat) · L. ega (Southern Yellow Bat) · L. egregius (Big Red Bat) · L. insularis (Cuban Yellow Bat) · L. intermedius (Northern Yellow Bat;eastern Yellow Bat) · L. intermedius intermedius (Northern Yellow Bat) · L. minor (Little Red Bat) · L. pfeifferi (Pfeiffer's Red Bat) · L. seminolus (Seminole Bat) · L. seminolus seminolus (Seminole Bat) · L. varius (Cinnamon Red Bat) · L. xanthinus (Western Yellow Bat)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 26, 2007:

Identifiers

Footnotes

  1. Mean = 265.600 meters (871.391 feet), Standard Deviation = 417.080 based on 1,535 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
  2. Arroyo-Cabrales, J., Miller, B., Reid, F., Cuarón, A.D. & de Grammont, P.C. 2008. Lasiurus borealis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 01 February 2012. [back]
Last Revised: 2012-07-14