de Kloet, RS; de Kloet SR (2005). "The evolution from the spindlin gene in birds: Sequence Assessment of the intron from the spindlin W and Z gene reveals 4 key divisions in the Psittaciformes".
With over four hundred https://elainezdqr014833.articlesblogger.com/53254304/macaw-parrots-for-sale-no-further-a-mystery