Zarthas

The Zarthas are a species of Bird Wyvern found on Volcanoes.

Physiology
The Zarthas is a distant relative of Eagles, featuring the same overall body shape with large and powerfully built wings, a hook-like beak made to rip flesh and armored legs and strong talons.

Their body is covered in prominently covered in black feathers, while their head and wings are covered in orange-red feathers and their talons possess sturdy shells that may make weapons bounce off.

A fully grown Zarthas is completely immune to short submersions in lava, as they feed on young Lavasioth, Uroktor and other lava dwellers, they have to enter the pools of lava to catch them, after they emerge their bodies will be covered in patches of lava, much like Agnaktor.

Information
The Zarthas have dominated the art of flight, being able to surpass Flying Wyverns like Rathalos or Barioth, they are usually born in pairs, but the firstborn's first meal is its younger sibling, and show no sign of parental respect once they are fully grown, while their beaks are among the strongest of Bird Wyverns', they still need to drop Lavasioth from the sky to crack their shells.

Abilities
Being aces in the sky, their moveset consists of flying attacks, such as diving, creating flaming tornadoes by flapping their wings and dropping other objects or living beings onto targets.

When they emerge from lava their melee attacks can potentially inflict fire damage for limited time, also being able to drop pools of lava which can do constant damage.

Their peck is a powerful death trap as being hit by it can mean instant death, or Zarthas attempting to eat the hunter, sometimes taking them to the sky while doing so.