Sobre las aves del Parque Nacional Río Pilcomayo con la adición de <i>Basileuterus flaveolus</i> a la avifauna argentina

The presence of 8 species are actualized for Formosa province, Argentina, one of which is first record for the country: <i>Basileuterus jlaveolus</i>. First concrete data about <i>Campephilus melanoleucus</i>, <i>Leptopogon amaurocephalus</i> and <i>Cnemotriccus jitscatus</i>, second data about <i>Trogon curucui</i> and fourth data a out <i>Mesembrinibis cayennensis</i> are given for the province. Third concrete data about <i>Campylorhynchus turdinus</i> is given for the country and <i>Crax fasciolata</i>, an endangered species, is confirmed for Río Pilcomayo National Park