Vespertilionidae
Guide for Acoustic Identification of Florida bats
Family
Database species code
Eptfus or Epfu
See glossary for explanation of codes
Scientific name
Eptesicus fuscus (Beauvois, 1796)
Taxonomy follows Simmons and Cirranello (2021)
Call shape
To view call graphics click on the camera icon on the right. You can then move through all images by using the left or right arrow keys. A left mouse click returns to the fact sheet.
Typical North American Vespertilionid pulses with FM reversed J broadband pulses of short duration. See notes for link to discussion of social vocalizations.
Vocal signature parameters
| Parameters | N | Min | Max | Mean | St.Dev | 10% | 25% | 75% | 90% |
| Dur | 419,329 | 1.40 | 19.99 | 5.27 | 3.22 | 1.73 | 2.44 | 7.53 | 9.82 |
| TBC | 393,160 | 1.5 | 14597.2 | 355.7 | 717.9 | 7.8 | 120.1 | 330.5 | 630.1 |
| Fmin | 419,329 | 23.02 | 32.00 | 27.30 | 1.70 | 24.84 | 26.23 | 28.52 | 29.30 |
| Fmax | 419,329 | 25.00 | 69.87 | 33.67 | 6.88 | 27.30 | 29.20 | 35.87 | 43.24 |
| BW | 419,329 | 0.08 | 45.19 | 6.37 | 6.58 | 1.12 | 1.84 | 8.51 | 15.59 |
| Fmean | 419,329 | 22.84 | 41.98 | 29.14 | 2.34 | 25.97 | 27.48 | 30.60 | 32.04 |
| Fk | 419,329 | 25.00 | 32.00 | 29.46 | 1.90 | 26.49 | 28.07 | 31.13 | 31.62 |
| FcH1 | 419,329 | 11.51 | 17.28 | 13.96 | 0.84 | 12.72 | 13.43 | 14.57 | 14.96 |
| Fc | 419,329 | 23.02 | 34.56 | 27.92 | 1.69 | 25.44 | 26.85 | 29.14 | 29.91 |
| FcH3 | 419,329 | 34.53 | 51.84 | 41.88 | 2.53 | 38.16 | 40.28 | 43.71 | 44.87 |
| Sc | 419,329 | -422.7 | 500.2 | 33.71 | 24.4 | 12.5 | 22.4 | 43.5 | 58.1 |
| Pmc | 419,329 | 0.00 | 168.70 | 20.50 | 23.00 | 2.80 | 4.80 | 28.00 | 53.20 |
Reported by Szewczak (2018)
| Eptfus | Fc | Fmax | Fmin | FmaxE | dur | uppr slp | lwr slp | slp @ Fc | total slp |
| Mean | 27.9 | 49.4 | 26.5 | 30.0 | 8.2 | 5.8 | 1.8 | 1.5 | 3.1 |
| Max | 30.0 | 56.0 | 28.0 | 32.0 | 11.0 | 8.3 | 2.9 | 2.9 | 4.6 |
| Min | 26.0 | 42.0 | 25.0 | 28.0 | 5.3 | 3.3 | 0.7 | 0.1 | 1.5 |
Source of acoustic data
Cynthia and George Marks
Chris Corben
Reference calls recorded by Marks are being archived at BioAcoustica and will be freely available. See Baker et al., (2015).
Known counties of distribution
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Conservation status
Least concern; Ver.3.1 ; Population trend - increasing; evaluated 2016. (I.U.C.N. 2017.)
Notes
See Baker et. al., (2015) for discussion of BioAcoustica and Baker and Vincent (2019) for a critique of the lack of freely available acoustic data.
Big brown bats possess a rich repertoire of social vocalizations, with 18 distinct syllable types recorded from captive bats (Gadziola et al., 2012)
Citations
Baker, E., B. W. Price, S. D. Rycroft, J. Hill, and V. S. Smith. 2015. BioAcoustica: a free and open repository and analysis platform for bioacoustics. Database. 2015. bav054
Baker, E., and S. Vincent. 2019. A deafening silence: a lack of data and reproducibility in published bioacoustics research? Biodiversity Data Journal 7: e36783.
Gadziola, M. A., J. M. S. Grimsley, P. A. Faure, and J. J. Wenstrup. 2012. Social vocalizations of big brown bats vary with behavioral context. PLoS One. 7: e44550.
Marks, C. S., and G. E. Marks. 2006. Bats of Florida. Pp. 176. University of Florida Press, Gainesville.
Simmons, N. B., and A. L. Cirranello. 2020. Bat Species of the World: A taxonomic and geographic database. http://batnames.org.
Szewczak, J. M. 2018. Echolocation Call Characteristics of Eastern U.S. Bats. Echolocation call characteristics of Eastern U.S. Bats. Unpublished report.
The IUCN 2017. Red List of Threatened Species. Version 2017-1.www.iucnredlist.org;. Downloaded on August 6, 2017.
Guide for Acoustic Identification of Florida bats 2021, all rights reserved.
