Flight.

The Thunder Falcon was a proud beast, but it was injured in a fatal spot, and by the time it heals, its life might have come to an end. After all, the forest and the magic beasts were not very kind to the weak. Even though the thunder falcons lived in the same spot, they did not have a relationship with each other. 

This was just a mutually beneficial co-existence. Thunder Falcons felt safe when they were surrounded by their kin, even if they did not have any complex relationships. This was because the thunder falcons were magical beasts with lightning elementals. A species that was rarest among the rarest. Thus, they were counted against by the humans and other beasts all the same. 

It was believed that their blood could allow the consumer to gain their powers, however, no one has ever succeeded, yet the humans lusted after their blood like forever.