It's chase and fight all day for the male hummers. I sat in my vegie garden and watched some tough battles. We let some salvia take over where the fall garden won't be planted and the hummers have really taken to the flowers. I also plant hummgingbird vine every year but those have yet to bud. The vine is great for migrating hummers as they pass through later in the fall.
Here's the resident mature male sampling the salvia.