Date: 9/26/19 8:23 am From: Pamela Johnston <shovzan...> Subject: [obol] What makes a hummingbird back down?
A hornet on the feeder.
I have seen Rufous and Anna's hassle each other and birds of all sizes, including Red-tailed Hawk, but I never saw one flee anything except another hummingbird until the hornets started gleaning sugar from the feeder openings. They drive the little blighters right off. Everyone has their limits.