Lin - I had a female show up during the summer for a couple of years. I typically don't get hummers here in the Summer. But when I do, I know they are breeding females. Your female hummer is probably also breeding and raising young to be here during the Summer months. She may have come over from Mexico or somewhere further south. They are known to breed in some areas of Florida during the Spring/Summer season. I know she is appreciating your nectar flowers and possibly feeders. Keep those feeders cleaned and filled every 2 days in the heat of summer. The sugar water can spoil really quickly in this horrible Florida heat.
Wished I had a female. I haven't had a female since 2011. I had females here in Winter until 2012 when the adult males ran them off. Its only been adult male Ruby-throated hummers since with a visit by 1 Rufous female for a brief period of time. You are sooooo lucky!!!
