Introduction
This is a high-quality young ostrich(struthio camelus), with multiple 4K maps, rigging, animation, and fur. The skin map and fur map of the body are made separately. This model is made by Blender and Cycles renderer at real-world scale.
It consists of 10 objects: Body, lacrimal glands, pupils, corneas, and 6 groups of feathers.

Polygons
Body: vertices 17,042; polygons 16,980;
Lacrimal glands: vertices 1,284; polygons 1,344;
Pupils: vertices 1,220; polygons 1,280;
Corneas: vertices 964; polygons 1,024;
Back feathers: vertices 1,075,998; polygons 1,012,704;

Formats
There is a Blender project and an OBJ file.

Textures
StruthioCamelus_Young_BlackFeather01_BaseColor.png, 1024*1024
StruthioCamelus_Young_BlackFeather02_BaseColor.png, 1024*1024
StruthioCamelus_Young_Body_Hair_BaseColor.png, 4096*4096
StruthioCamelus_Young_Body_Normal.png, 4096*4096
StruthioCamelus_Young_Body_Skin_BaseColor.png, 4096*4096
StruthioCamelus_Young_Body_Specular.png, 4096*4096
StruthioCamelus_Young_Eye_BaseColor.png, 1024*1024
StruthioCamelus_Young_Hair_Mask.png, 4096*4096
StruthioCamelus_Young_WhiteFeather_BaseColor.png, 1024*1024
StruthioCamelus_Young_YellowFeather_BaseColor.png, 1024*1024

Rigging
With full controllers created manually with Blender armature system, postures and animations are easier to create. Features are as follows:
Root controls the whole character.
CTR_gravity controls the center of the gravity of the body with customized attributes.
CTR_head controls the movement of the head and the stretch of the neck.
CTR_mouth_D controls mouth opening.
CTR_eye_b controls the rotation of the eyes.
FK_belly controls breath animation on the belly.
CTR_FK_Tail_a, CTR_FK_Tail_b, and CTR_FK_Tail_c control the rotation of the tail.
CTR_IK_foot.Land CTR_IK_foot.R are the controllers of IK chain on the legs.
IKFK_leg.L and IKFK_leg.R switch the IK/FK of the legs by the customized attributes, which is non-seamless.
IKFK_neck switches the IK/FK of the neck, which is non-seamless.
CTR_foldwing.L and CTR_foldwing.R control the wings opening and closing.
Each toe has a separate controller.
Face is rigged.
And more……

Animations
Loopable walking animation at 30 FPS, frame range 0-144;
Loopable trotting animation at 30 FPS, frame range 0-145;
Unlooped playing animation at 30 FPS, frame range 0-180;

Features
The particle systems of the back feathers have been applied. If please toggle on the particle systems below if needed.
StruthioCamelus_Young_Hair_AllFeather
StruthioCamelus_Young_Hair_WhiteFeather
StruthioCamelus_Young_Hair_BlackFeather
Some back feathers are rigged by skinning. The others are rigged with Surface Deform modifiers to the body.