Right now there appears to be more than one. On several occasions at the end of June I saw two of them fly to the crescent where they split and went to separate areas. In the brief video below, one landed by the Police Station and the other across from Trader Vic's. Usually just see the one.

I think one of my favorite things in life now is knowing individuals of any other species and follwoing their lives over time. Like this little jumper on one of my front yard plants I get to see every once in a while.

That's really neat!