“ | A bird wyvern with a huge beak and large ears that splay open when it is angered. | „ | |
- MHGU Description |
Yian Kut-Ku is a Bird Wyvern first introduced in Monster Hunter.
Physiology
The Yian Kut-Ku is characterized by its large, fan-like ear frills that unfurl when excited and enlarged lower bill. They have a large, yellow beak with a pink stripe running central down the length of the upper beak. The lower jaw of its beak is significantly larger and bulkier than the top jaw. Yian Kut-Ku's body is covered in orange-pink plating and beige scales. Its wing membranes are deep blue and its eyes are bright yellow. These wyverns are small and relatively light, making them quick and agile. They have an extremely powerful sense of hearing, thanks to the large frills circling their ears.
Behavior and Abilities
The Yian Kut-Ku is capable of moving at high speeds thanks to its light weight and small stature. It is also able to produce flaming projectiles coming from its flame sac, which can be shot from the mouth at attackers. It can spew three flaming projectiles at hunters when enraged and move faster.
A somewhat temperamental, skittish, and inquisitive wyvern. Yian Kut-Ku have a tendency to want to appear bigger than they really are by spreading their wings, flaring out their ears, and squawking loudly. They are generally insectivores, preying on Konchu and other Neopterons as a main part of their diet. In the Scarlet Forest, they are shown to live in packs.
Habitat
Yian Kut-Ku can be seen inhabiting a wide variety of locations such as the Verdant Hills and the Old Volcano.
Game Appearances
Click on Expand to see contents.
Main Series
- Monster Hunter (Introduced)
- Monster Hunter G
- Monster Hunter Freedom
- Monster Hunter 2
- Monster Hunter Freedom 2
- Monster Hunter Freedom Unite
- Monster Hunter 4
- Monster Hunter 4 Ultimate
- Monster Hunter Generations
- Monster Hunter Generations Ultimate
- Monster Hunter Wilds
Frontier
- Monster Hunter Frontier
- Monster Hunter Frontier Season 2.0
- Monster Hunter Frontier Season 3.0
- Monster Hunter Frontier Season 4.0
- Monster Hunter Frontier Season 5.0
- Monster Hunter Frontier Season 6.0
- Monster Hunter Frontier Season 7.0
- Monster Hunter Frontier Season 8.0
- Monster Hunter Frontier Season 9.0
- Monster Hunter Frontier Season 10
- Monster Hunter Frontier Forward.1
- Monster Hunter Frontier Forward.2
- Monster Hunter Frontier Forward.3
- Monster Hunter Frontier Forward.4
- Monster Hunter Frontier Forward.5
- Monster Hunter Frontier G
- Monster Hunter Frontier G2
- Monster Hunter Frontier G3
- Monster Hunter Frontier G Genuine
- Monster Hunter Frontier G5
- Monster Hunter Frontier G6
- Monster Hunter Frontier G7
- Monster Hunter Frontier G8
- Monster Hunter Frontier G9
- Monster Hunter Frontier G10
- Monster Hunter Frontier Z
- Monster Hunter Frontier Z Zenith
Spin-offs
- Monster Hunter Online
- Monster Hunter Stories
- Monster Hunter Stories 2: Wings of Ruin
- Monster Hunter Spirits
- MH Diary: Poka Poka Felyne Village
- Monster Hunter Roar of Cards
- Monster Hunter Mezeporta Reclamation
Crossovers
- TEPPEN
- Gyuakuten Othellonia
Game Data
For details on older games this monster has appeared in, see Yian Kut-Ku Guides.
Physiology
Yian Kut-Ku Physiology | ||
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Cutting Damage (Click Image to Zoom) |
Impact Damage (Click Image to Zoom) |
Shot Damage (Click Image to Zoom) |
Credits: kei_9 (ケイ) of Pixiv |
Key: | ||
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Dark Red Ineffective |
Red Effective |
Pink Highly Effective |
Weak Point Hitzone Damage Data | |||
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Hitzone | ![]() |
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Head | 50 | 80 | 100 |
Neck | 50 | 60 | 50 |
Back | 40 | 50 | 40 |
Belly | 80 | 70 | 80 |
Wings | 75 | 70 | 70 |
Legs | 25 | 30 | 30 |
Tail | 50 | 60 | 30 |
Breakable Parts
Head (x1) (2nd Gen onwards) | |
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Special Damage Charts
Element Weakness Damage Data | ||||||
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Hitzone | ![]() |
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Head | 10 | 30 | 30 | 49 | 0 | |
Neck | 10 | 80 | 50 | 50 | 20 | |
Back | 10 | 20 | 15 | 15 | 0 | |
Belly | 10 | 20 | 15 | 15 | 0 | |
Wings | 10 | 10 | 25 | 15 | 0 | |
Legs | 5 | 5 | 5 | 5 | 0 | |
Tail | 10 | 20 | 15 | 15 | 0 |
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Initial Tolerance | 100 |
Increase | 100 |
Max Tolerance | 400 |
Initial Duration | 40 |
Total Damage | 200 |
Reduction | 5 Secs. |
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Initial Tolerance | 100 |
Increase | 100 |
Max Tolerance | 400 |
Initial Duration | 10 |
Total Damage | N/A |
Reduction | 5 Secs. |
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Initial Tolerance | 110 |
Increase | 100 |
Max Tolerance | 410 |
Initial Duration | 40 |
Total Damage | N/A |
Reduction | 5 Secs. |
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Initial Tolerance | 120 |
Increase | 100 |
Max Tolerance | 520 |
Initial Duration | 10 |
Total Damage | N/A |
Reduction | 5 Secs. |
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Initial Tolerance | 130 |
Increase | 45 |
Max Tolerance | 1030 |
Initial Duration | N/A |
Total Damage | 100 |
Reduction | N/A |
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Initial Tolerance | 180 |
Increase | 75 |
Max Tolerance | 480 |
Initial Duration | N/A |
Total Damage | N/A |
Reduction | 5 Secs. |
Materials
For carves and materials from older games, see Yian Kut-Ku Carves
Equipment
For more information, see Yian Kut-Ku Equipment
Armor
Yian Kut-Ku materials can be used to craft the following armor in Monster Hunter 4 Ultimate:
Weapons
The following is a list of Yian Kut-Ku weapons in Monster Hunter Generations Ultimate:
Great Sword:
Dual Blades:
Hammer:
Hunting Horn:
Switch Axe:
Insect Glaive:
Light Bowgun:
Heavy Bowgun:
In-Game Description
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Other Variants
Hard Core (HC) Yian Kut-Ku

Hardcore Yian Kut-Ku is much more pink than a standard Yian Kut-Ku. Hardcore Yian Kut-Ku can perform a circular rampaging charge attack with extreme attack power, and has the ability to spew a Fire Ball that causes a wall of fire.
Yian Kut-Rex
Monster Hunter Online introduced an April Fools quest with a Yian Kut-Ku as the target. This Yian Kut-Ku shows no odd signs initially, but upon entering Abnormal State it assumes the skeleton, animations, moveset and theme of Tigrex. It will exactly fight and act like a Tigrex, but instead of throwing rocks it throws fireballs.
Notes
General Notes
- The name "Kut-Ku" may come from the word "cuckoo" for its bird-like characteristic and appearance.
- The large frills or discs around its ears function similarly to the facial discs of owls, enhancing their hearing.
- Yian Kut-Ku was voted 35th place in the Hunters' Choice for Top Monster during Monster Hunter's 20th Anniversary.[1]
Monster Hunter Freedom Unite
Monster Hunter 4 Ultimate
Monster Hunter Wilds
- When the pack is present, several non-interactable Kut-Ku will appear in the background of their nest.
Monster Hunter Frontier
Monster Hunter Online
Monster Hunter Stories 2
- Opposing Yian Kut-Kus turn to Speed attacks when enraged.