Bat falcon – Wikipedia

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Species of bird

The bat falcon (Falco rufigularis) is a falcon that is a resident breeder in tropical Mexico, Central and South America, Trinidad. It was long known as Falco albigularis; the names Falco fusco-coerulescens or Falco fuscocaerulescens, long used for the aplomado falcon, are now believed to refer to the present species.[2]

It is probably closely related to and looks like a small version of the orange-breasted falcon with which it has been misidentified.[3] These two, in turn, are probably closest to the aplomado falcon and constitute a rather old American lineage of Falco species.[4]

The female bat falcon, at 30.5 cm length, is much larger than the 23-cm-long male. Adults have a black back, head, and tail. The throat, upper breast, and neck sides are creamy white, the lower breast and belly are black, finely barred white, and the thighs and lower belly are orange. Young birds are similar, but with a buffy throat. The call of this species is a high pitched ke-ke-ke like the American kestrel.

This small, dark bird of prey inhabits open woodlands and forest clearings. Bat falcons perch conspicuously on high, open snags, from which they launch aerial attacks on their prey. They hunt bats, birds, small rodents and large insects such as dragonflies. The smaller male takes more insects, and the female more birds and bats. The flight is direct and powerful. This falcon is partly crepuscular, as the bats in its diet suggest. It lays two or three brown eggs in an unlined treehole nest.

Vagrancy[edit]

According to the U.S. Fish and Wildlife Service (USFWS) the first recorded bat falcon sighting in the U.S. occurred in December 2021 in the Santa Ana National Wildlife Refuge in Alamo, Texas. Wildlife officials determined that the bird sighted was a juvenile male based on its buff-cinnamon throat and crest bars, and the thickness of the tarsus and beak. [5]

References[edit]

  • Beebe, C. William (1950): The home life of the bat falcon, Falco albigularis Daudin. Zoologica (New York) 35(4): 69–86.
  • Birregard, Richard O. (1994): 45. Bat Falcon. In: del Hoyo, Josep; Elliott, Andrew & Sargatal, Jordi (editors): Handbook of Birds of the World, Volume 2 (New World Vultures to Guineafowl): 267–268, plate 27. Lynx Edicions, Barcelona. ISBN 84-87334-15-6
  • ffrench, Richard; O’Neill, John Patton & Eckelberry, Don R. (1991): A guide to the birds of Trinidad and Tobago (2nd edition). Comstock Publishing, Ithaca, N.Y.. ISBN 0-8014-9792-2
  • Hilty, Steven L. (2003): Birds of Venezuela. Christopher Helm, London. ISBN 0-7136-6418-5
  • Helbig, A.J.; Seibold, I.; Bednarek, W.; Brüning, H.; Gaucher, P.; Ristow, D.; Scharlau, W.; Schmidl, D. & Wink, Michael (1994): Phylogenetic relationships among falcon species (genus Falco) according to DNA sequence variation of the cytochrome b gene. In: Meyburg, B.-U. & Chancellor, R.D. (editors): Raptor conservation today: 593–599. PDF fulltext
  • Griffiths, Carole S. (1999): Phylogeny of the Falconidae inferred from molecular and morphological data. Auk 116(1): 116–130. PDF fulltext
  • Griffiths, Carole S.; Barrowclough, George F.; Groth, Jeff G. & Mertz, Lisa (2004). “Phylogeny of the Falconidae (Aves): a comparison of the efficacy of morphological, mitochondrial, and nuclear data”. Molecular Phylogenetics and Evolution. 32 (1): 101–9. doi:10.1016/j.ympev.2003.11.019. PMID 15186800.
  • Groombridge, Jim J.; Jones, Carl G.; Bayes, Michelle K.; van Zyl, Anthony J.; Carrillo, José; Nichols, Richard A. & Bruford, Michael W. (2002). “A molecular phylogeny of African kestrels with reference to divergence across the Indian Ocean”. Molecular Phylogenetics and Evolution. 25 (2): 267–77. doi:10.1016/S1055-7903(02)00254-3. PMID 12414309.
  • Wink, Michael; Seibold, I.; Lotfikhah, F. & Bednarek, W. (1998): Molecular systematics of holarctic raptors (Order Falconiformes). In: Chancellor, R.D., Meyburg, B.-U. & Ferrero, J.J. (editors): Holarctic Birds of Prey: 29–48. Adenex & WWGBP. PDF fulltext

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