Several of these hummingbirds were visiting a nectar feeder. As they fed hungrily, often quarrelling with one another, occasionally one would get displaced onto a nearby branch. I waited by the branch for a couple hours, staying very still. I used a telephoto lens with a special attachment that allowed me to focus on close subjects. What made this a challenge was how fidgety these birds can be and the fact that the full spectrum of colour is only seen when they pause at a very specific angle.