Additional Creatures Wiki

Kutsu-Ya-Ku are fantasy creatures in Additional Creatures.


Kutsu-Ya-Ku is the largest of the Ya-Ku bird wyvern trio. Like its relatives, it lacks proper vocal cords and communicates with clopping its heavy beak or forcing air out its windpipe. With a large, blunt beak, this bird wyvern is a foul-tempered dweller of fresh water. Commonly seen wading through it, Kutsu is content to feast on local fish populations, but will happily help itself to whatever else comes across its path that is smaller than it- humans included! It uses is heavy beak and clawed feet to pummel its prey violently into submission, for an easy kill. To those who can get one, the tempermental Kutsu-Ya-Ku is actually an excellent tame. Despite their size and strength, they are easily tamed and can easily fend off smaller predators. Due to their temperament: most small creatures leave you alone as well! Further, its aquatic affinity can prove useful for survivors living in certain habitats!

Color Regions

Color Region 0 - Main Body


Color Region 1 - Feathers


Color Region 2 - Collar, Stripes


Color Region 3 - Beak


Color Region 4 - Undertoned Stripes


Color Region 5 - Stripe Outer Tone, Feet


Base Stats, Controls, and Abilities

Attribute Base Stat
Health 500
Stamina 300
Food 1500
Weight 470
Melee Damage 210%
Movement Speed 100%
Torpidity 800

Left Click - Beak Attack

40 Base Damage - Increased Gathering on Fish Meat

Right Click - Claw Slash

27 Base Damage - Hits Twice - Gathers Meat, Berries, Fiber, and Thatch

C - Stomps

35 Base Damage - Hits Twice - Deals 5x Damage to Smaller Creatures - Cannot Be Used While Moving

Shift + C - Shoulder Bash

50 Base Damage - High Knockback

X - Clatter

Left Control + X - Roar

Spacebar - Jump

Kutsu-Ya-Ku are hostile to smaller creatures, including humans, but will mostly ignore larger ones, and said larger creatures will also largely ignore Kutsu-Ya-Ku. This also applies to tamed individuals.

Kutsu-Ya-Ku have the following elemental weaknesses:

  • Fire (2x)
  • Thunder (1.5x)


  • Kutsu-Ya-Ku is a part of the bird wyvern class.
  • Kutsu-Ya-Ku is the 2nd member of Grand Hunt's raptorial bird wyverns, alongside Diru-Ya-Ku and Shiro-Ya-Ku. It is the largest and most aggressive of the trio.
  • Kutsu-Ya-Ku appears to be heavily referenced to Shoebill Storks, given its appearance and title.