KnowraHoatzinLinked fromLinked fromThe 3 pages that link to Hoatzin, each with the reason it gives.All 3Broader topic 2Compared with 1Foregut fermentationBroader topic: Its unusual avian foregut allows it to digest foliage through fermentation.Bird taxonomyBroader topic: Its isolated lineage has resisted easy placement among other living bird orders.TuracoCompared with: Its former association with turacos has not held up in modern evolutionary classification.