The wild monk parakeets in the Tampa bay area like to nest in utility poles, water towers and lights at ballparks. I’ve never seen or heard of them nesting in trees in the area.  I was at Largo Nature Park recently which is right next to a big utility complex and the parakeets were buzzing around. They were busy chasing each other and screaming. I could hear them all over the park. It was fun to watch those flashes of green flying in and out of the utility wires especially since it would be a lot harder to see them in the trees.