Introduction
This is a realistic barn swallow model with 6K & 8K maps, fur, 4 animations, and fine rigging that controls each feather. It's made with Blender and Cycles renderer at a real-world scale.
It consists of feathers, body, eyelids, pupils, corneas, shoulder feathers, and tongue.

Polygons
Feathers: vertices 38,916; polygons 29,440
Body: vertices 25,996; polygons 25,944
Eyelids: vertices 386; polygons 384
Pupils: vertices 1,220; polygons 1,280
Corneas: vertices 964; polygons 1,024
Shoulder feathers: vertices 268; polygons 222
Tongue: vertices 186; polygons 184
Total: vertices 67,936; polygons 58,478

Formats
There is a Blender project and an OBJ file without rigging or animation.

Textures
JF0LA12A1_BarnSwallow_BigFeather_D_BaseColor.png, 6144*6144
JF0LA12A1_BarnSwallow_BigFeather_Height.png, 6144*6144
JF0LA12A1_BarnSwallow_BigFeather_Normal.png, 6144*6144
JF0LA12A1_BarnSwallow_BigFeather_Roughness.png, 6144*6144
JF0LA12A1_BarnSwallow_BigFeather_U_BaseColor.png, 6144*6144
JF0LA12A1_BarnSwallow_Body_BaseColor.1001.png, 6144*6144
JF0LA12A1_BarnSwallow_Body_BaseColor.1002.png, 6144*6144
JF0LA12A1_BarnSwallow_Body_Displacement.1001.png, 6144*6144
JF0LA12A1_BarnSwallow_Body_Displacement.1002.png, 6144*6144
JF0LA12A1_BarnSwallow_Body_Feather_BaseColor.png, 4096*4096
JF0LA12A1_BarnSwallow_Body_Feather_Normal.png, 4096*4096
JF0LA12A1_BarnSwallow_Body_Hair_Mask.png, 6144*6144
JF0LA12A1_BarnSwallow_Body_Normal.1001.png, 6144*6144
And more...

Rigging
With full controllers, postures and animations are easy to create. The features are as follows:
CTR_roll controls the entire model.
CTR_spine_root_F and CTR_spine_root control the former and latter center of gravity of the body.
CTR_spine_roll_B, CTR_spine_roll_B.001, CTR_spine_roll_B.002, CTR_spine_roll_F and CTR_spine_roll_F.001 are FK controllers of the body.
FK_neck_roll and CTR_neck_roll control the root of the neck.
CTR_neck_roll comes with 2 customized attributes:
NeckFollow controls whether the neck moves following the parent controller;
CTR_spine_roll_F.001 controls the rotation.
FK_neck_roll.001 is the FK controller of the neck.
CTR_neck_stretch.002 is the controller of the neck, and its customized attribute NeckStretch controls whether the neck bones can be stretched.
CTR_head_root is the controller of the head, and its customized attribute EyelidRoll controls the movement of the third eyelids; Head_Follow controls whether the head moves following the parent controller.
CTR_mouth_roll and CTR_head_roll control the mouth.
CTR_eye, CTR_eye.L and CTR_eye.R control the eyes.
CTR_leg_root.L and CTR_leg_root.R are IK controllers of the feet; and its customized attribute IK_FK controls the non-seamless IK/FK switch of the legs.
CTR_shoulder_roll.L and CTR_shoulder_roll.R are FK controllers of the shoulders, and its customized attribute WingFollow controls whether the wings rotate following the body.
CTR_bigwing_roll.L, CTR_centrewing_roll.007.L, CTR_littlewing_roll.008.L, CTR_bigwing_roll.R, CTR_centrewing_roll.007.R, CTR_littlewing_roll.008.R... are FK controllers of the wings.
CTR_wing.L and CTR_wing.R control the folding of the wings by their Location.
CTR_tall_feather controls the tail feathers folding.
Each feather comes with skinned bone and a separate controller. Besides, there are some controllers which are to rotate, fold and unfold multiple feathers overall.
And more...

Animations
Loopable flying animation at 30 fps, frame range 0-8 frames
Unlooped landing animation at 30 fps, frame range 0-230
Unlooped TakeOff animation at 30 fps, frame range 0-210
Unlooped tweeting animation at 30 fps, frame range 0-220

Features
The model is in meter units at real-world scale.
The Display button of the fur is disabled.
This model cannot be scaled by controller ROOT. You can put the model into an empty object, and scale the empty object.