Gruiformes
Canada Cranes ( Grus canadensis)
At the order of the Gruiformes ( Gruiformes ) almost 20 families are counted traditionally, many of which are known only through fossils. There are small to very large birds, which proceed, run or swim. All crane birds are precocial.
Traditional systematics
The Handbook of the Birds of the World is one of the following eleven families of the crane birds:
- Bins Rails ( Heliornithidae )
- Kagus ( Rhynochetidae )
- Cranes ( Gruidae )
- Chicken run ( Turnicidae )
- Rails ( Rallidae )
- Limpkins ( Aramidae )
- Seriemas ( Cariamidae )
- Sunbittern ( Eurypygidae )
- Stilts Coot ( Mesitornithidae )
- Bustards ( Otididae )
- Trumpeter birds ( Psophiidae )
Modern systematics
Recent phylogenetic analyzes have only a core group of five families at the Crane birds: the limpkins, cranes, trumpeter birds, Bins Rails and Rails. Newly added is the monotypic family Sarothruridae, consisting only of the previously operated in the Rails genus Sarothrura.
The term chicken come to the Charadriiformes ( Charadriiformes ). Stilts Rails and bustards are placed in new monotypic orders ( Mesitornithiformes and Otidiformes ). The sister species Kagu and sunbittern form the new order Eurypygiformes and Seriemas along with some extinct bird families the order Cariamiformes.
The probable relationships of the remaining families are the following cladogram again.
Cranes ( Gruidae )
Limpkins ( Aramidae )
Trumpeter birds ( Psophiidae )
Sarothruridae
Bins Rails ( Heliornithidae )
Rails ( Rallidae )
In addition to the recent nor the following families of extinct birds of the crane birds are counted:
- Messel Coot ( Messelornithidae ) †
- Eogruidae †, late Eocene to early Oligocene of Asia
- Ergilornithidae †, early Oligocene of Asia and Late Pliocene to Miocene of Asia and Europe
- Geranoididae †, early and middle Eocene of North America
- Aptornithidae †, endemic to New Zealand