IUCN threat status:

Vulnerable (VU)

Distribution

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Range Description

Biatas nigropectus is rare in south-east Brazil and uncommon in north-east Argentina. All Argentine records are from Misiones, where the largest series of specimens has been obtained. The species persists in stands of Guadua trinii bamboo throughout northern and eastern Misiones from Iguaz National Park to the Yabot Biosphere Reserve, and especially in the area from the northern half of the Yabot Biosphere Reserve to Santa Rosa and Pialito Sur (Bodrati and Cockle 2006, A. Bodrati in litt. 2007). Between 2003 and 2011, more than 300 individuals have been detected in Misiones using tape playback (Bodrati and Cockle 2006, A. Bodrati in litt. 2007, A. Bodrati and K. Cockle in litt. 2012). In Brazil, most records are from Rio de Janeiro and So Paulo, with Itatiaia National Park and Intervales State Park particular strongholds. There are further records from Minas Gerais, from Itatiaia on the border with Rio de Janeiro, and at Itabira and So Domingos do Prata in the mid-1980s; Paran, from Iguau National Park, Fazenda Santa Rita and the Tibagi River Basin (Anjos et al. 1997), and Santa Catarina, from Ararangu (do Rosrio 1996). Evidence from the 19th century indicates that this was always a rare bird, but it is presumably declining in response to habitat loss.

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Source: IUCN

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