Fig. 4From: The multifactorial nature of beak and skull shape evolution in parrots and cockatoos (Psittaciformes)Phylomorphospaces of the NANI (non-allometric, non-integrated) shape data. Points coloured by clade (a) and diet (b). Inset skulls characterise the shapes represented by the maximum and minimum end warps of their corresponding PC axesBack to article page