5 ESSENTIAL ELEMENTS FOR PAROTS

de Kloet, RS; de Kloet SR (2005). "The evolution with the spindlin gene in birds: Sequence Evaluation of an intron with the spindlin W and Z gene reveals 4 big divisions on the Psittaciformes". Parrots are well known for their intense intelligence – this could be a driving power at the rear of their longevity, as being the species with the bigge