Tyrant-flycatchers (Tyrannidae)

Hudson's Black-tyrant (Knipolegus hudsoni) - HBW 9, p. 377

French: Ada de Hudson German: Weißflanken-Dunkeltyrann Spanish: Viudita Patagona

Taxonomy: Cnipolegus hudsoni P. L. Sclater, 1872, Río Negro, Patagonia.
Formerly placed with K. poecilocercus in defunct genus Phaeotriccus on basis of shape of outer primaries. Monotypic.

Distribution: Breeds C Argentina from Córdoba S to Neuquén, Río Negro and SW Buenos Aires; migrates N to Bolivia and S Brazil.