Have You Seen the Green Clouds? : The Wild Parrots of Houston

So I keep seeing this guy- and not just one of him but flocks. This morning a lil green cloud of a dozen or more flew over me – this is the third of fourth time now. I was wondering if yall had any more information? Anyone recognize the species? Have you seen them before and for how long ago and where was your first sighting? Fashion myself a bit of a birder and I keep tabs on invasive fauna and flora so this is an interesting development here…