Features of the flight of birds with what these features can be associated (shape and size of wings, tail)?

Low-flying birds usually have yellow eyes, short and rounded or wide wings, and a large tail that allows them to suddenly change direction. A bird of prey of low flight, feathered and naked. For a bird to fly, its body must confirm some very important criteria. If the wingspan of a bird is less than its length, then it cannot fly (for example, a chicken, a penguin). The carina is the point where the pectoral muscles of birds are fixed, allowing them to flap their wings. Without this, the bird will not be able to fly or even take off.