Humphrey and Thompson, 1981,
Chubut Province, Argentina.
In recent phylogenetic study, present species and T. patachonicus were found to form a clade, distinct from the other two congeners#R. Although species is locally abundant, not described until 1981; old records of occurrence of T. pteneres on Chubut coast presumably refer to present species. Previously considered to form a superspecies with T. pteneres and T. brachypterus. Monotypic.
S Argentina (Chubut) from Valdés Peninsula S to Comodoro Rivadavia; also S to Santa Cruz (breeding records in Bahía Laura)#R, and occasional to Beagle Channel (Tierra del Fuego).
Food and feeding
Status and conservation
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