 A similar cladogram was published in 2007 , inverting the placement of Goura and <unk> and including the pheasant pigeon ( <unk> nobilis ) and the thick @-@ billed ground pigeon ( Trugon terrestris ) 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 Groura pigeons and others , in agreement with the genetic evidence . In 2014 , DNA of the only known specimen of the recently extinct spotted green pigeon ( Caloenas maculata ) was analysed , and it was found to be a close relative of the Nicobar pigeon , and thus also the dodo and Rodrigues solitaire . 
