Tyrant-flycatchers (Tyrannidae)
Cassin's Kingbird (Tyrannus vociferans) - HBW 9, p. 421
French: Tyran de Cassin
German: Cassinkönigstyrann
Spanish: Tirano Gritón
Taxonomy: Tyrannus vociferans Swainson, 1826, Temascáltepec, Mexico.
Closest relatives of genus may be Empidonomus and Tyrannopsis; recent molecular-sequence data indicate present genus is monophyletic and sister-group to clade that includes Empidonomus and Griseotyrannus; two main clades within genus, loosely corresponding to “tropical species assemblage” and combination of “W” & “E” species groups of earlier authors, but with some exceptions. Phylogenetic analyses indicate that present species is basal to a clade including T. verticalis and T. forficatus within an “E & W species group” that al.. View all taxonomy...
Taxonomy: Tyrannus vociferans Swainson, 1826, Temascáltepec, Mexico.
Closest relatives of genus may be Empidonomus and Tyrannopsis; recent molecular-sequence data indicate present genus is monophyletic and sister-group to clade that includes Empidonomus and Griseotyrannus; two main clades within genus, loosely corresponding to “tropical species assemblage” and combination of “W” & “E” species groups of earlier authors, but with some exceptions. Phylogenetic analyses indicate that present species is basal to a clade including T. verticalis and T. forficatus within an “E & W species group” that also includes T. tyrannus and perhaps T. caudifasciatus and/or T. cubensis. On basis of similarities in voice and some aspects of behaviour, may be closest to T. couchii, T. crassirostris and T. verticalis, but this not yet supported by molecular data. Validity of race xenopterus questionable; further investigation necessary. Two subspecies tentatively recognized.
Closest relatives of genus may be Empidonomus and Tyrannopsis; recent molecular-sequence data indicate present genus is monophyletic and sister-group to clade that includes Empidonomus and Griseotyrannus; two main clades within genus, loosely corresponding to “tropical species assemblage” and combination of “W” & “E” species groups of earlier authors, but with some exceptions. Phylogenetic analyses indicate that present species is basal to a clade including T. verticalis and T. forficatus within an “E & W species group” that also includes T. tyrannus and perhaps T. caudifasciatus and/or T. cubensis. On basis of similarities in voice and some aspects of behaviour, may be closest to T. couchii, T. crassirostris and T. verticalis, but this not yet supported by molecular data. Validity of race xenopterus questionable; further investigation necessary. Two subspecies tentatively recognized.
Subspecies and Distribution:
- vociferans Swainson, 1826 - W & C USA (SE Montana, E Wyoming, SW South Dakota, SW Nebraska, C & S California, extreme SE Nevada, S Utah, SW & SC Colorado, N & E Arizona, New Mexico, W Texas), Mexico (Baja California, and S from W Sonora and Chihuahua to Oaxaca and Chiapas) and Guatemala.
- xenopterus Griscom, 1934 - SW Mexico (highlands of Guerrero).
- Least Concern Enlarge map
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An adult perched, looking around and giving a single note call, stretching its wing and flying away Locality Ventura County, California, USA (United States) (ssp vociferans)
Don DesJardin 31 March 2008 5 years ago 32 sec 4.7 -
An adult bird rubbing its bill in slow motion Locality Ventura, Ventura County, California, USA (United States) (ssp vociferans)
Don DesJardin 29 February 2008 5 years ago 21 sec 4.5 -
An adult perched looking around and then flying away calling Locality Ventura, Ventura County, California, USA (United States) (ssp vociferans)
Don DesJardin 29 February 2008 5 years ago 11 sec 4.5 -
A lateral view of an adult perched looking around Locality Ventura County, California, USA (United States) (ssp vociferans)
Don DesJardin 31 March 2008 5 years ago 31 sec 4.3 -
A dorsal view of an adult perched Locality Ventura, Ventura County, California, USA (United States) (ssp vociferans)
Don DesJardin 29 February 2008 5 years ago 26 sec 4.3 -
A frontal view of an adult perched and calling twice Locality Ventura, Ventura County, California, USA (United States) (ssp vociferans)
Don DesJardin 29 February 2008 5 years ago 31 sec 4.3
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Perched at top of a tree
Locality San Diego, San Diego County, California, USA (United States) (ssp vociferans)
Paul A Guris 4 September 2011 1 year ago 3.9 -
Male Cassin's Kingbird perching high in tree
Locality Bosque del Apache National Wildlife Refuge, Socorro County, New Mexico, USA (United States)
Roger Brissenden 17 July 2010 2 years ago 3.4 -
Cassin's kingbird in a tree. There were two of them that were very noisy hopping around this tree.
Locality Sepulveda Basin Wildlife Reserve, Los Angeles County, California, USA (United States)
susanks 15 January 2010 3 years ago 3.3 -
perching on top of pine tree in my former garden
Locality Tepepan, Mexico DF State, Mexico (Northern)
Hector Ceballos-Lascurain 14 November 2007 1 year ago 2.8
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An adult bird calling twice. Locality Ventura, Ventura County, California, USA (United States)
(ssp vociferans)
Don DesJardin 29 February 2008 23 weeks ago 4
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