This group includes birds known as cranes, rails, crakes, swamphens, agamis, gallinules or coots. They stand out for not having a crop in their digestive system. Most of these birds have long, pointed beaks and long, sturdy legs. They also undertake impressive long-distance migrations. In our regions we can observe the migration of grey cranes, which spend the summer in northern Europe before wintering in North Africa and Spain. Their characteristic V-shaped flight is easily distinguished by the powerful migration songs. In the past, the Gruiformes formed the order Ralliforms, which they also shared with Otidiformes (bustards) and some Charadriiformes.