I have both male and female ruby-throated hummers visiting the two feeders I have out (along with downies and their juveniles!), leading me to believe that my feeders are either part of a female's territory or a neutral territory that both males and females visit. I have only seen a couple of high speed chases with warning chirps between two males who happened to arrive in the feeder area at nearly the same time. Single females are observed frequently, as well as, single visits from males. At about 6:00 p.m. this evening a male and a female arrived in the area of the feeder at approximately the same time. The vocals emitted were not the typical sounds of warning chirps, but of a softer tone and frequency. The female disappeared into the nearby holly shrub as the male arrived and she remained hidden there. The male displayed beside the holly by swinging back and forth in a shallow U-shaped arch with the bottom of the U occuring one to two feet from the ground. The ends of the arch extended from a couple of feet in front of the holly bush to a couple of feet to the rear of the bush, approximately ten to twelve feet in height at the ends of each swing. After approximately five swings, both hummers departed, but returned a few minutes later, and the male displayed again, as described previously, but with only about three repetitions before the two departed again. I have witnessed this display once before at Seven Islands Wildlife Refuge with a male displaying in a similiar manner at tree top level, and once last season with a male swinging out from a mid-canopy tree limb and back again. This display is delightful to see at any time, but, in particular, this one's closeness to the ground came as a surprise. Vickie Henderson Knox County Knoxville, Tennessee