What is "columbimorphae"

Columbimorphae is a clade that includes birds of the orders Columbiformes (pigeons and doves), Pteroclidiformes (sandgrouse), Mesitornithiformes (mesites), discovered by genome analysis. Previous analysis have also recover this grouping, although the exact relationships differ. Some studies indicate a sister relationship between sandgrouse and pigeons (the traditional view) while other studies favor a sister grouping of mesites and sandgrouse instead.