Introduction
This is a female mandarin duck model with textures, feathers, fine rigging and animation. The model is made with Blender and Cycles renderer.
It consists of body, sclerae, irises, lacrimal glands, nictitating membranes, tongue, foot, claws, feathers.

Polygons
Body: vertices 23,030; polygons 22,998
Sclerae: vertices 292; polygons 320
Irises: vertices 356; polygons 384
Lacrimal glands: vertices 1,024; polygons 1,024
Nictitating membranes: vertices 2,564; polygons 2,560
Tongue: vertices 7,096; polygons 7,144
Foot: vertices 18,876; polygons 18,816
Claws: vertices 436; polygons 388
Feathers: vertices 632,980; polygons 404,582
Total: vertices 686,654; polygons 458,216

Formats
A .blend file, and a FBX model without rigging or animations.

Textures
JF0L406A0_MandarinDuck_Female_Mouth_SubsurfaceAmount .png, 4096*4096
JF0L406A0_MandarinDuck_Female_Mouth_Specular.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Mouth_Roughness.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Mouth_Normal.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Mouth_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Foot_Specular.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Foot_Roughness.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Foot_Normal.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Foot_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather06_Normal.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather06_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather05_F_Normal.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather05_F_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather04_F_Specular.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather04_F_Roughness.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather04_F_Normal.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather04_F_Metallic.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather04_F_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather04_B_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather03_F_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather02_F_Specular.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather02_F_Roughness.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather02_F_Normal.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather02_F_Metallic.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather02_F_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather02_B_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather01_F_Specular.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather01_F_Roughness.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather01_F_Normal.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather01_F_Metallic.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather01_F_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather01_B_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather_Specular.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather_Rectrices_F_Bump.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather_Rectrices_F_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather_Rectrices_B_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather_Normal.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather_Body_Bump.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather_Body_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Body_BaseColor.png, 4096*4096
JF0L406A0_MandarinDuck_Female_Feather_Shoulder_Bump.png, 2048*2048
JF0L406A0_MandarinDuck_Female_Feather_Shoulder_BaseColor.png, 2048*2048
JF0L406A0_MandarinDuck_Female_Feather_Scapulars02_BaseColor.png, 2048*2048
JF0L406A0_MandarinDuck_Female_Feather_CovertsUP_BaseColor.png, 2048*2048
JF0L406A0_MandarinDuck_Female_Feather_CovertsMIV_BaseColor.png, 2048*2048
JF0L406A0_MandarinDuck_Female_Feather_CovertsMIN_BaseColor.png, 2048*2048
JF0L406A0_MandarinDuck_Female_Back_Bump.png, 2048*2048
JF0L406A0_MandarinDuck_Female_Face_Mask.png, 1024*1024
JF0L406A0_MandarinDuck_Female_Face_Feather_Mask.png, 1024*1024
JF0L406A0_MandarinDuck_Female_Head_BaseColor.png, 1024*1024

Rigging
With full controllers, postures and animations are easier to create, the features are as follows:
MandarinDuck_Female_Coverts_Rig_grp and MandarinDuck_Female_Remiges_Rig_grp are skeletons of feathers; MandarinDuck_Female_Body_Rig_grp is the main rigging that controls the model.
CTR_gravity controls the movement of the body, and it has 5 customized attributes:

1. head_IK_follow controls whether the head moves following it in IK mode;
   
2. neck_FK switches to FK control of neck;
   
3. neck_IK_IKSpline switches the control mode of the neck between IK and Spline IK;
   
4. neck_IK_Stretch controls the stretch limit of the neck in IK mode;
   
5. neck_follow controls whether the root of the neck moves following the body in IK or FK mode;
   
6. tongue_IKFK controls the switch of IK/FK of the tongue.
   IKFK_leg.L and IKFK_leg.R control the switch of IK/FK of the legs by the customized attribute IK_FK, and control the stretch limit of the legs in IK mode by IK_stretch.
   CTR_toe_action.L and CTR_toe_action.R control the extension and flexion of the feet.
   CTR_foldwing.L and CTR_foldwing.R control the folding of the wings by their Location.
   CTR_Fold_Rectrices folds tail feathers by the X-Location.
   Fine rigging makes it possible to control every feather, and fold, unfold and bend wings conveniently.
   And more...
   

Animations
Unlooped swimming animation at 30 fps, frame range 0-360

Features
A part of the feathers have two UVs for a better result.
To fix the intersection with body feathers, feathers on the neck apply Cloth, and the Cloth is baked to shape key.
MandarinDuck_Female_Feather_Head_Face is not controlled by the rigging because of Surface Deform modifier; Disable Surface Deform modifier, and enable Armature modifier to enable rigging control.
To get a nice effect, the settings below are required for such thick feathers:

1. Set Total under Light Paths to 12, or larger;
   
2. Set Transparency under Light Paths to 65 at least;
   
3. Set Transmission under Light Paths to 12 at least;