Feathers (singular: feature) are one of the integumentary derivatives of birds (and some extinct dinosaurs) that cover most of all parts of body. It is a strong, light, elastic, heat insulator and water proof growths of epidermis that helps in
Feathers (singular: feature) are one of the integumentary derivatives of birds (and some extinct dinosaurs) that cover most of all parts of body. It is a strong, light, elastic, heat insulator and water proof growths of epidermis that helps in