Hudson's canastero (Asthenes hudsoni ) is a species of bird in the family Furnariidae. It is found in Argentina, Brazil, Paraguay, and Uruguay. Its natural habitat is temperate grassland. It is named after Argentine-British ornithologist William Henry Hudson.
Hudson's canastero is part of a group of streaked canasteros that have drab plumages with dark stripes on dorsal parts and inhabit grassy areas. It is most closely related to the similarly-looking Austral Canastero. Hudson's canastero inhabits humid grasslands usually near marshes, including brackish marshes, and specially areas that show tall bunch grasses interspaced with short turf or bare ground.
The species forages on the ground and rarely perches on grass bunches or other vegetation. It is presumed to be insectivorous. It build its nest at the base of a grass bunch. The species is at least partially migratory. Its breeding distribution encompasses the humid pampas and a narrow strip of land along the coast of Rio Grande do Sul, Brazil. Wintering individuals can be found across a larger area in central Argentina and Uruguay, rarely reaching southern Paraguay.
