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The family Columbidae was introduced by the English zoologist William Elford Leach in a guide to the contents of the British Museum published in 1820. Columbidae is the only living family in the order Columbiformes. The sandgrouses (Pteroclididae) were formerly placed here, but were moved to a separate order Pteroclidiformes based on anatomical differences (e.g., they are unable to drink by "sucking" or "pumping"); they are now considered to be more closely related to shorebirds. Recent phylogenomic studies support the grouping of pigeons and sandgrouse together, along with mesites, forming the sister taxon to Mirandornithes.