Acoustic Identification bats of Antigua and Barbuda


Family

Phyllostomidae

Scientific name

Brachyphylla cavernarum Gray, 1833.

Taxonomy follows Simmons and Cirranello (2022)

Call shape

Call shapes of all species of the family Phyllostomidae are broad band, multiple harmonic and often consist of two pulses. These pulses are generally steep FM decreasing frequencies immediately followed by another pulse somewhat higher start frequency but overlapping frequencies. The interpulse time is very short between these pulses.

See notes for additional details 

Vocal signature parameters

Known call parameters are provided from published sources and field recordings.

Below extracted from Jennings et al., 2004. N= number of bats not pulses as in other tables.

Parameters    N Min Max Mean
Dur 4 2.2 3.2 2.6
TBC 4 46.0 108.0 76.0
Fmin 4 36.0 40.0 38.0
Fmax 4 64.0 72.0 66.8
BW 4 28.0 32.0 28.8
FcH1 2 31.7 33.4 32.6
Fc 4 47.9 54.8 51.4

 

Measured from wav files provided by Barataud

Parameters   N Min Max Mean St.Dev 10% 25% 75% 90%
Dur 22 0.2 2.0 0.8 0.6 0.2 0.3 1.3 1.6
TBC 22 0.7 4.4 2.1 1.0 0.8 1.3 2.8 3.0
Fmin 22 40.2 48.2 42.4 2.7 40.4 40.6 44.2 46.5
Fmax 22 42.3 61.5 51.5 6.2 43.2 46.0 57.6 58.8
BW 22 1.5 18.2 9.2 5.2 2.1 4.9 12.8 16.2
Fmean 22 40.4 54.3 46.9 4.5 41.3 42.5 51.1 51.8
Fk 22 40.6 55.2 46.3 5.0 41.1 42.6 51.1 54.0
FcH1 22 20.1 28.2 23.2 2.6 20.2 20.5 25.3 25.3
Fc 22 40.2 56.3 46.4 5.1 40.4 41.1 50.6 50.6
FcH3 22 60.3 84.5 69.5 7.7 60.6 61.6 75.8 75.9
Sc 22 -2910.2 389.2 -204.2 814.1 -795.8 -375.6 242.2 310.7
Pmc 22 0.0 44.9 11.5 10.9 2.2 3.7 15.7 21.3

Source of acoustic data

Published calls are from Barataud et al. (2015) and Jennings et al., 2004.

Measured calls are from file provided by Barataud.

Known distribution

  • Antigua
  • Barbuda

Conservation status

Least concern

Duran and Davalos (2019)

Notes

Note when displaying short call pulses such as Phyllostomids make sure setting in the Kaleidoscope Signal Params tab is set for a minimum pulses to = 0.5, otherwise not all pulses will display.

While echolocation calls of species in the family Phyllostomidae can be recorded, they are considered "Whispering bats" and therefore are very quiet. They rely on sight, smell and sound to detect prey/food. Generally, they do not use echolocation until they are close to food items (Kalko pers. Com.).

Only the H2 is presented here as the table in Jennings et al., (2004) apparently has errors in the reporting the fundamental harmonics (H1) as they are not exact multiples of the H2.

Citations

Barataud, M., S. Giosa, F. Leblanc, P. Favre, and J.-F. Desmet. 2015. Sonar signals and acoustic ecology of bats from Guadeloupe and Martinique islands (West Indies). Vespère. 5: 297-332.

 

Jennings, N. V., S. Parsons, K. E. Barlow, and M. R. Gannon. 2004. Echolocation calls and wing morphology of bats from the West Indies. Acta Chiropterologica. 6: 75-90.

 

 

Lindsay, K., G. Kwiecinski, J.-P. Bacle, A. Thibou, and C. Wallace. 2017. Bats of Antigua and Barbuda their importance and conservation. Federation Family Publishing House, St. George's, Antigua.

 

Morgan, G. S. 2001. Patterns of extinction in West Indian bats. Pp. 369-407 in Biogeography of West Indies: Patterns and Perspectives (C. A. Woods and F. E. Sergile, eds.). CRC Press, Boca Raton, Florida.

 

Pedersen, S. C., Et al. 2006. Bats of Antigua, Northern Lesser Antilles. Occasional Papers, Museum of Texas Tech University. 249: 1-19.

 

Rodriguez Duran, A. & Davalos, L. 2019. Brachyphylla cavernarum. The IUCN Red List of Threatened Species 2019: e.T2982A22039359.

 

Simmons, N. B., and A. L. Cirranello. 2022.. Bat Species of the World: A taxonomic and geographic database. www.batnames.org

Acoustic Identification bats of Antigua and Barbuda2022, all rights reserved.