Marcelo Barbosa is a biologist – ornithologist and master in ecotone ecology. He has lived in the state of Tocantins since 1999 and has been a local guide in Tocantins since 2011 (Tocantins Birding).He knows the best birding sites well and works mainly in the central region, around Palmas – TO and in the region of the Araguaia River basin, where the main highlights are Kaempfer’s Woodpecker, Araguaia Cardinal, Bananal Antbird, Araguaia Spinetail and a new species of Spinetail (undescribed form) known as Araguaia River Spinetail, among others endemic and threated birds with range of State of Tocantins.