What occurs when a hawk has new feathers known as blood feathers?

When a hawk has new feathers referred to as blood feathers, it means that these feathers are not yet fully grown. Blood feathers are still developing and are connected to the bird's vascular system, containing a blood supply until they mature. During this time, they are sensitive and can bleed if damaged, which is why special care must be taken to avoid harming them. This stage indicates that the feathers are in the process of growing in, and they have not yet reached their final, fully formed state. Understanding this helps falconers and bird enthusiasts monitor a hawk's development and health during its molting process.