“Feeding biology of pectoral sandpiper Calidris melanotos (Birds: Scolopacidae) in the floodplain of the Paraná river, Argentina Mónica Bagnarol, Adolfo Beltzer, Martín Quiroga, María de la Paz Ducomm un & Ana Laura Ronchi Virgolini”, Natura, vol. 1, no. 41, pp. 5–17, Apr. 2010, doi: 10.14409/natura.v1i41.3882.