What bird is native to the Amazon, has a chestnut crest, and is known for its foul smell? The Hoatzin (Opisthocomus hoazin)! It’s the only bird known to have a form of digestion called foregut fermentation, in which bacteria help to break down the cell walls of leaves, its main source of food. This ability comes with a price, though. The bacteria release methane that the Hoatzin then belches out. The burps have a manure-like odor that inspired its other name, “stinkbird”!
Photo: Vince Smith, flickr
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(via typhlonectes)