Videos on my TikTok https://www.tiktok.com/@barbarafanclub
If the pack says not compatible on 1.21.4 use it anyway it should still work
Some mobs are broken in 1.21.5 I'm working on fixing them
After unzipping the folder it may create an extra parent folder so you will have to drag it out to make it work

Parrot = Robin
Fox = Huohuo
Spider = Kafka
Horse = Boothill
Bee = Firefly/SAM
Iron Golem = Argenti
Wither = Blade
Blaze = Guinaifen
Sheep = Herta
Endermen = Acheron
Wolf = Silver Wolf
Slime = Yunli
Squid = Sampo
Ravager = Rappa
Ender Dragon = Dan Heng IL
Chicken = Sunday
Zombie = Misha
Witch = The Herta
Creeper = Himeko
Glow Squid = Aglaea
Evoker = Stelle
Vex = Mem
Skeleton = March 7th
Warden = Mydei
Phantom = Moze
Wither Skeleton = Castorice
Villager = Welt Yang
Snow Golem = Dr. Ratio

music disc 13 is Sway to My Beat in Cosmos
music disc wait is If I Can Stop One Heart From Breaking
music disc ward is Hope Is the Thing With Feathers
music disc chirp is A Gentleman's Fantasy

Bedrock version here: www.planetminecraft.com/texture-pack/bedrock-robin-parrot/