 The following cladogram, from Shapiro and colleagues (2002), shows the position of the dodo and solitaire within the pigeon and dove family.A similar cladogram was published in 2007, inverting the placement of "Goura" and "Didunculus" and including the pheasant pigeon and the thick-billed ground pigeon at the base of the clade.Based on behavioural and morphological evidence, Jolyon C. Parish proposed that the dodo and Rodrigues solitaire should be placed in the Gourinae subfamily along with the "Goura" pigeons and others, in agreement with the genetic evidence.