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LeConte’s Free-Tail, Tadarida brasiliensis cynocephala

TABR     

Echolocation: Highly variable, sometimes audible, particularly social calls. Some individual calls or short call sequences can be confused with EPFU and LAIN

Florida Distribution:  Peninsular FL

Roosting Behavior: Colonial.   Males sometimes solitary,  TABR are a truly urban species In FL &  the SE US, which adapted so well to roosting in structures (buildings, bridges, etc), they have all but abandoned the use of natural roosts.  Colonies range in size from fewer than 100 to several thousand and can be identified by the distinct ‘sweet & musky’ odor. Often  roost with EPFU, MYAU or NYHU.

Foraging Behavior: Mostly moths

Reproduction: Single pup born mid May - late June.  Juveniles volant in 10 -12 weeks

Management and Conservation Recommendations:  TABR have been documented in buildings & bat house throughout the  SE  Would benefit most from the continued installation of bat houses and IPM practices designed to manage populations rather than control nuisance colonies.  Approved exclusion methods are only the first step – the colony will simply move to a nearby structure without roost mitigation.  Bat management guidelines that require physical exclusion methods, roost mitigation (installation of bat houses) and clearly prohibit the use of chemicals or poisons and maternity season exclusions. 

Tadarida brasiliensis   (TABR) Anabat files recorded  September 2008

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Description—Measurements

Mass g

FA mm

Wingspan

Total length

Tragus

Calcar

10 – 13

41.4 - 41.9

290 - 325

91 - 98

small, blunt

present

1/3 of tail protrudes beyond inter femoral membrane, short velvety fur, gray, brown or  russet  coloration, large squarish ears, wrinkled muzzle, long narrow wings

Urban Bat Status

Buildings
BatHouses

Yes

Yes

Status

FWS / USGS
Florida
FNAI
IUCN

none

Common / abundant

G5

NT