Lin - I only had female Ruby-throated hummers for many Winters. 2011 was the last time I had females using my yard to perch and feed in during Winter. I asked a bander about that and she told me that because I started adding a LOT of plants for hummers (and butterflies), my yard became "prime" hummer property which drew all the males to my yard. They chased off all the females. I would love to see some females now.
If you want males, add salvia, firespike, firebush, coral honeysuckle, as well as a Cape Honeysuckle bush or two. I had to add all these plants all around my yard because the males were fighting over the plants, so now everyone is happy when there are 3-4 males claiming my yard. I have plants in every zone of my yard just to keep the peace in Winter!
