High Quality Content by WIKIPEDIA articles! The Rufous-bellied Thrush (Turdus rufiventris) is a songbird of the thrush family (Turdidae). It occurs in most of east and southeast Brazil from Maranhão south to Rio Grande do Sul states, Bolivia, Paraguay, Uruguay and northern regions of Argentina. It is one of the most common birds across much of southeastern Brazil, and is well-known there under its local name sabiá-laranjeira. The Rufous-bellied Thrush has been the state bird of São Paulo since 1966. It was proposed as the national bird of Brazil, and was officially chosen in 2002. This species is named after its distinctive reddish-orange underparts. Rufous-bellied Thrushes can reach a length of 25 cm and weigh up to 68 g (male) or 78 g (female), though weights of about 59 g for males and 64 g for females are more usual. Contrary to what one might expect from the rather marked weight difference, the females are not larger, only plumper; their tarsus is actually a bit shorter thanthat of males on average.