An unidentified nocturnal flight call from southern Mexico
DOI:
https://doi.org/10.28947/hrmo.2017.18.1.272Keywords:
Unidentified bird call, night migration, nocturnal flight call, North America, Mexico, Veracruz, Parulidae, Emberizidae.Abstract
In fall migration 2012 an avian nocturnal flight call monitoring station at Minatitlán, Veracruz, Mexico logged a previously unreported call type. The simultaneous two-toned nature of the vocalization is consistent with production from a syrinx (i.e. not from a bat or flying squirrel). The less than 100 ms duration of the call, the 6-10 kHz frequency range, and the characteristics we collected of its nightly and hourly periodicity are congruent with calls given by many small passerines that migrate at night across North America. Yet the call is distinct from night flight calls of neotropical migrant species that regularly traverse eastern USA in spring and fall migration. We have considered the known species that migrate through Veracruz and there are a number of candidates for the caller, but the identity has eluded us. We submit here the mystery and evidence we have gathered for review by others who may have special insight or who may carry on the investigation. Identifying the call would enable the possibility for automatically documenting nocturnal migration activity of the species across its range with specialized audio processors.
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References
Bowen, B.S. 2002. Groove-billed Ani (Crotophaga sulcirostris), The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology. Available in: http://bna.birds.cornell.edu/ (accessed March 2016).
Evans, W.R. 1994. Nocturnal flight call of Bicknell’s Thrush. Wilson Bulletin 106:55-61.
Evans, W.R. and M. O’Brien. 2002. Flight Calls of Migratory Birds: Eastern North American Landbirds. [CD-ROM]. Old Bird, Ithaca, New York.
Farnsworth, A. 2011. Rosetta Stone for Warblers. Cornell Laboratory of Ornithology. https://www.allaboutbirds.org/a-rosetta-stone-for-identifying-warblers-migration-calls/ (accessed March 2016).
Howell, S.N.G. and S. Webb. 1995. A guide to the birds of Mexico and northern Central America. Oxford University Press, New York.
Lanzone, M., E. Deleon, L. Grove and A. Farnsworth. 2009. Revealing undocumented or poorly known flight calls of warblers (Parulidae) using a novel method of recording birds in captivity. Auk 126:511-519.
Larkin, R.P., W.R. Evans and R.H. Diehl. 2002. Nocturnal flight calls of Dickcissels and Doppler radar echoes over south Texas in spring. Journal of Field Ornithology 73:2-8.
Rodríguez Ramos, G., M. Grosselet and G. Ruiz Michael. 2015. Eye coloration in Common Yellowthroat (Geothlypis trichas) to determine age. North American Bird Bander 40:11-15.
Schaldach W.J. Jr. 2003. Partially annotated and taxonomic checklist of the birds of the state of Veracruz, Mexico. Catemaco, Veracruz, Mexico. Available in: http://catemaco.info/docs/schaldach/annotated.html (accessed March 2016).
Schmierer, A. 2013. Current post-breeding, winter, and spring status of Botteri’s Sparrow (Peucaea botterii arizonae) in Arizona. Arizona Field Ornithologists. http://www.azfo.org/journal/StatusBotterisSparrowAZ_Final_2013.html (accessed March 2016).
Watson, M.L., J.V. Wells and R.W. Bavis. 2011. First detection of night flight calls by Pine Siskins. Wilson Bulletin 123:161-164.
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