Chlidonias niger (Linnaeus, 1758)

Chlidonias niger (Linnaeus, 1758) View in CoL Figure 3

Materials examined. Tables 1, 2.

IDentificAtion. In April 2018, we saw two non-breeding individuals of C. niger flying on the river ( 16°52 ʹ S, 057°24 ʹ W) together with Phaetusa simplex (Gmelin, 1789) and Sternula superciliaris (Vieillot, 1819) . The individuals of C. niger were identified by their grey wings and back and white head and belly. The birds present with a dark crown and nape, with a black patch behind the eye and an extensive dark patch on the side of the breast ( Gochfeld et al. 2019).

This is the first record of C. niger for the Pantanal wetland and the Central Region of Brazil ( Fig. 4) The closest South American localities to our new record is Tres Pozos, Argentina ( 980 km) and Lagoa de Maricá, Rio de Janeiro, Brazil ( 1,675 km).