The Hooded Siskin (Carduelis magellanica), is a small passerine bird in the finch family Fringillidae. It is native to South America. It inhabits woodland, savannas, scrubland, farmland, parks and gardens. It occurs from sea-level up to 5000 m. In eastern South America it is found from central Argentina north to central Brazil. In the Andean region it occurs from north-west Argentina and northern Chile north to central Colombia. There is an isolated population in south-east Venezuela, Guyana and the Brazilian state of Roraima. 11 subspecies are recognized.
Hooded Siskins are 4 to 5.5 inches in length. The male is largely green above and yellow below with a black head. It has a narrow yellow collar and a yellow rump. The tail is black with yellow sides to the base and the wings are black with a broad yellow band. Females are duller with a green-brown head, yellow-green breast and sides and a whitish belly. The twittering song may be uttered from a perch or in flight. It is varied and fast and sometimes contains imitations of other birds.
It is commonly found in flocks, feeding in trees or bushes or on the ground. The diet consists mainly of seeds together with buds, leaves and some insects.