 The Rodrigues solitaire ( Pezophaps solitaria ) is an extinct , flightless bird that was endemic to the island of Rodrigues , east of Madagascar in the Indian Ocean . Genetically within the family of pigeons and doves , it was most closely related to the also extinct dodo of Mauritius , the two forming the subfamily Raphinae . The Nicobar pigeon is their closest living genetic relative . 
