The bird's eye chilli is one of Thailand's hottest varieties of chillies. They are picked at peak maturity then dried in their whole form to lock in full flavour and heat. Characteristic of the Thai sense of humour, the hottest of these chillies is called park kid noon, which literally means "mouse droppings." This particular variety is known as Bird's Eye chillies, or Bird peppers, simply because looking at one from the stem-end can appear like the eye of a bird. When they are fully mature, they turn red. They are a variety of Capsicum frutescens and were originally the chilli used in Sriracha sauce. The full range of chillies that The Spice People stock can be found here.