Abstract
The bicudinho-do-brejo-paulista (Formicivora aff. acutirostris) is an endemic bird species of São Paulo State that was recently discovered in the region of Arujá, Salesópolis, Biritiba-Mirim and Mogi das Cruzes. It occurs in wild swamps and, specially due to the destruction of its habitat in order to built hydroelectric stations, forest fire, and introduction of exotic species, it is alre…