Meet Loten. He is a long-billed sunbird. His feathers are purple and maroon. The yellow and grey bird is his sister, Lily.
Sunbirds like Loten and Lily live in parts of India and Sri Lanka. They are as long as a 100-rupee note and weigh as much as a ten-rupee coin.
Loten and Lily have curved beaks and tube-shaped tongues to gather nectar from flowers.
When Loten and Lily were babies, the had short, wide beaks so that their parents could feed them easily. Their parents digested the food a little in their stomachs before feeding it to them.
When they grew strong enough, Loten and Lily learnt to fly. They also had to learn to find their own food.
Loten and Lily get energy from what they eat and drink. This energy allows them to use their muscles to fly.
Unlike us humans, Loten and Lily cannot store much energy in their bodies as fat. They have to stay very light. Otherwise, they will not be able to fly.
This is why sunbirds have to eat many times a day. In fact, they spend most of their days flying around, looking for food.

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