The Wattled Jacana is a wader which is a resident breeder through most of South America east of the Andes.
The jacanas are a group of wetland birds, which are identifiable by their huge feet and claws that enable them to walk on floating vegetation in the shallow lakes that are their preferred habitat. They are found worldwide within the tropical zone.
The Wattled Jacana lays four black-marked brown eggs in a floating nest. The male, as with other jacanas and some other wader families like the phalaropes, takes responsibility for incubation, with two eggs held between each wing and the breast.
The are common, but I only saw them in one lake (where there was supposed to be a small family of giant otters), fun to watch.