This is a report on two nesting attempts by the Common Potoo (Nyctibius griseus) in an urban environment at Palmeiras de Goiás, Goias state, central Brazil. In December 12, 2006, a nest was found on a tree (Caesalpinia pothoroides), 2.8 m above the ground. This nest contained a white egg with dark red and brown patches. A few days later, no eggs were found in this nest. Other nesting attempt was recorded on October 9, 2007, when a chick was found in the same place used as nesting site in 2006. The young was not found in the next days. Our study is the first to document the nesting of N. griseus in the Cerrado core area. Key words: Caprimulgiformes, nest site, Cerrado, urban ecology.

The Orinoco Goose (Neochen jubata) is a "Near Threatened" species occurring extensively in South America. The objective of this study was to examine the breeding and seasonal occurrence of the species in Brazil. A search for adults and young was done by consulting the WikiAves database of photographs. Families with young were obtained by citizens in 11 municipalities within the Cerrado and Amazonia. In general, breeding birds were associated with rivers, been encountered swimming, or walking at sandy beaches. The Tocantins-Araguaia hydrographic region (TAHR) harbored most records with breeding evidence in the Cerrado, while families with young were recorded along the Guaporé and Purus rivers in Amazonia. Families had 1-2 adults and 2-11 young. Differences between the mean brood sizes of downy young and juveniles were not significant. On the other hand, the mean number of young accompanied by two adults was significantly higher than that been cared by only one adult. In both the Cerrado and Amazonia, young were detected during the dry season and beginning of the rainy season, when the water level of rivers is low. Pium, Aruanã, and Caseara are important breeding sites, while São Miguel do Araguaia and Lagoa da Confusão appear to be major non-breeding sites. The seasonal occurrence of records suggests that N. jubata might migrate within the TAHR. The species can breed successfully in central and northern Cerrado, where Parque Estadual do Cantão appears to be an important conservation unit for this species. Education of locals and strict protection are suggested as major actions for its conservation in Brazil.

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