Most hummingbirds feed primarily on nectar and insects but sometimes their bills are not long enough to reach the nectar. That´s exactly what happened here as another bird, probably a Flowerpiercer, open a hole in the base of this hibiscus flower to steal nectar, and I say still as these birds does not pollinate the flower but just steal the natural fuel. In this case the hummingbird had learned to do the same and that´s when I cought it while flying and extending its tail feathers as another hummingbird of of the frame came to compite for food.