Guide for Acoustic Identification of Florida bats

Family

Vespertilionidae

Database species code

Nychum or Nyhu

See glossary for explanation of codes

Scientific name

Nycticeius humeralis (Rafinesque, 1818)

Taxonomy follows Simmons and Cirranello (2021)

Call shape

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Typical North American Vespertilionid pulses with FM reversed J broadband pulses of short duration.

See Garner et al., 2003.

Vocal signature parameters
Parameters   N Min Max Mean St.Dev 10% 25% 75% 90%
Dur 3115 0.1 14.0 5.7 3.67 0.32 1.98 8.71 10.11
TBC 3047 0.3 6574.8 157.1 262.1 7.0 87.5 172.7 268.8
Fmin 3115 23.7 41.5 36.0 2.1 33.5 34.6 37.6 38.7
Fmax 3115 40.0 85.1 49.2 8.7 40.4 41.5 54.4 62.5
BW 3115 0.1 49.3 13.1 9.8 2.2 5.0 19.2 27.7
Fmean 3115 36.0 43.0 39.1 1.6 37.0 38.0 40.2 41.4
Fk 3115 35.1 42.0 38.7 1.7 36.4 37.4 40.2 41.0
FcH1 3115 16.1 20.0 18.6 0.7 17.6 18.0 19.2 19.6
Fc 3115 32.3 40.0 37.2 1.5 35.2 36.0 38.4 39.2
FcH3 3115 48.4 60.0 55.8 2.2 52.9 54.1 57.6 58.8
Sc 3115 -454.3 1458.6 78.6 157.1 3.8 12.6 57.5 249.8
Pmc 3115 0.0 129.5 32.6 25.4 4.5 10.7 48.6 70.3

 

Reported by Szewczak (2018)

Nychum Fc Fmax Fmin FmaxE dur uppr slp lwr slp slp @ Fc total slp
Mean 37.8 63.0 36.1 40.0 6.6 12.5 2.3 1.2 4.9
Max 40.0 78.0 38.0 43.0 9.4 20.0 3.7 2.5 7.9
Min 36.0 48.0 34.0 37.0 3.8 4.7 0.9 0.0 1.8

Source of acoustic data

Cynthia and George Marks

Reference calls recorded by Marks are being archived at BioAcoustica and will be freely available. See Baker et al., (2015).

Known counties of distribution
  • Alachua
  • Baker
  • Bay
  • Bradford
  • Brevard
  • Broward
  • Calhoun
  • Charlotte
  • Citrus
  • Clay
  • Collier
  • Columbia
  • Miami-Dade
  • De Soto
  • Dixie
  • Duval
  • Escambia
  • Flagler
  • Franklin
  • Gadsden
  • Gilchrist
  • Glades
  • Gulf
  • Hamilton
  • Hardee
  • Hendry
  • Hernando
  • Highlands
  • Hillsborough
  • Holmes
  • Indian River
  • Jackson
  • Jefferson
  • Lafayette
  • Lake
  • Lee
  • Leon
  • Levy
  • Liberty
  • Madison
  • Manatee
  • Marion
  • Martin
  • Monroe
  • Nassau
  • Okaloosa
  • Okeechobee
  • Orange
  • Osceola
  • Palm Beach
  • Pasco
  • Pinellas
  • Polk
  • Putnam
  • Santa Rosa
  • Sarasota
  • Seminole
  • St. Johns
  • St. Lucie
  • Sumter
  • Suwannee
  • Taylor
  • Union
  • Volusia
  • Wakulla
  • Walton
  • Washington
    Conservation status

    Least concern; Ver.3.1 ; Population trend - stable; evaluated 2008. (I.U.C.N. 2017.)

    Notes

    The subspecies Nycticeius humeralis subtropicalis (Schwartz, 1951) described from southern Florida has not been found to differ from the nominate species (Simmons and Cirranello, 2020).

     

    See Watkins (1972) for additional details on this species.

     

    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.

    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.

     

    Garner, S. M., C. D. Hein, A. C. Miles, and S. S. Castleberry. 2003. Echolocation call parameters of Nycticeius humeralis. Bat Research News. 44: 140.

     

    Marks, C. S., and G. E. Marks. 2006. Bats of Florida. Pp. 176. University of Florida Press, Gainesville.

     

    Schwartz, A. 1951. A new race of bat (Nycticeius humeralis) from southern Florida. Journal of Mammalogy. 32:233-234.

     

    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.

     

    Watkins, L. C. 1972. Nycticeius humeralis. Mammalian Species. 23: 1-4.

     

    Guide for Acoustic Identification of Florida bats 2021, all rights reserved.