gruiform, Any member of the order Gruiformes, which contains a loose collection of more than 160 species of birds spread across several families that are generally agreed to be related but that differ widely in many aspects. Gruiforms are an ancient group with a rich fossil history, but many families are now restricted in range and few in number. The only family with worldwide distribution is the Rallidae (rails, gallinules, and coots), with roughly 140 living species. Cranes (Gruidae) are found on every continent except South America; many of the 15 species have small populations, some on the verge of extinction. Most classifications also include trumpeters (Psophiidae) of South America, finfoots (Heliornithidae) of the Old World and New World tropics, and limpkins (Aramidae) of the Americas.
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Explore the bird order Gruiformes, its diversity, and its classification
Below is the article summary. For the full article, see gruiform.