Grigunos

Grigunos are young Bird Wyverns found everywhere on the continent of Keudes.

Physiology
Grigunos share a similar body structure to that of Faltarnos and Kerahnos, being theropod Bird Wyverns that can switch between bipedal and quadrupedal stances. They possess crimson feathers that cover their entire body, with the exception of their neck, head, underside, and legs. Any unfeathered areas are covered in dark grey scales. Their head is similar to that of a juvenile Allosaurus fragilis and possesses jagged fangs. They have sunken eyes, so sunken to the point that its eye sockets seem empty. Three small spines line its neck. Its feet are anisodactyl, with, oddly, two sickle-shaped claws on each one.

Behavior
Grigunos are extremely aggressive, often going after hunters as soon as they spot them.

Abilities
Aside from their ability to switch between the bipedal and quadrupedal stances, Grigunos can shoot balls of fire at prey and enemies.

Taxonomy

 * Order: Saurischia
 * Suborder: Bird Feet
 * Infraorder: Runner Wyvern
 * Family: Grigunos

Habitat Range
Grigunos inhabits every single locale on the continent of Keudes.

Ecological Niche
Grigunos isn't high on the food chain whatsoever, having to resort to hunting small monsters such as Apceros and Kestodon. They are prey for many predators, such as Rathalos, Tigrex, and Deviljho.

Biological Adaptations
Grigunos retain the same adaption of switching between a quadrupedal and bipedal state that their relatives have. What makes them different is the existence of a flame sac located in their throat. This allows Grigunos to shoot balls of fire at prey and enemies.

Trivia

 * Grigunos was originally going to be an ice-based Bird Wyvern called "Frigunos".