Ben Cranke / Giant Cowbird (Molothrus oryzivorus) perched on a palm tree frond, Mato Grosso, Pantanal, Brazil. August.
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Luiz Claudio Marigo / Giant Cowbird (Molothrus oryzivorus) at Pixaim River, Pantanal of Mato Grosso, Mato Grosso State, Western Brazil.
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Luiz Claudio Marigo / Giant Cowbird (Molothrus oryzivorus) at Pixaim River, Pantanal of Mato Grosso, Mato Grosso State, Western Brazil.
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Staffan Widstrand / Capybara (Hydrochoerus hydrochaeris) sitting in wetland vegetation with Giant cowbird (Molothrus oryzivorus) perched on its back, Cuiaba River, Pantanal, Mato Grosso, Brazil.