feather, the component structure of the outer covering and flight surfaces of all modern birds. Unique to birds, feathers apparently evolved from the scales of birds’ reptilian ancestors. The many different types of feathers are variously specialized for insulation, flight, formation of body contours, display, and sensory reception. Feathers are the most characteristic and specialized component of the avian integumentary system, vital for flight, thermoregulation, visual communication, and protection from the elements. There are several types of feathers, and their size, shape, colors, and functions vary tremendously across ... Feathers is a full-stack web-framework for creating APIs and real-time applications with TypeScript or JavaScript. Feathers can interact with any backend technology, supports many databases out of the box and works with any frontend technology like React, VueJS, Angular, React Native, Android or iOS. Learn how feathers help birds fly, keep warm, and communicate with each other. Explore the different types, shapes, and colors of feathers and how they are made of keratin.