Weighing in as much as two pennies. This small bird is full of energy as it forages for food through the branches of shrubs and trees. Rarely giving you enough time to get a clear picture of it, let alone being able to see the male’s ruby crown all lit up with some back light. The crown patch is normally hidden, except when the excited male is singing in spring or summer. Being tiny in size, it is assumed from metabolic studies they can live on 10 calories per day. That works out to 2 grams from a 10-gram piece of my favourite chocolate bar. With that said, there is no need to feed them chocolate or any of our food. Give them space and they will happily prey on various types of insects and consume small amounts of seeds and fruit.