I did these a while back but i never made progress on the character/ boss art so I forgot to upload them. Generic Chicken Enemy concepts for this idea by @howlingguardian (click images for better resolution)
Standard Enemies: Giant Chickens with no special hidden abilities
Peckers: Special beaks for extra damage.
Leghorn: Standard, extra attack.
Polish: Fast, rapid attacker.
Fayoumi: Lightweight and better flight, special drops.
Spitzhauben: Higher attack.
Blockers: Shield-like feathers. Typically hens(?)
Silkie: Leg Armor
Orpington: Wing armor
Cochin: Chest Armor
Favorelles: Neck Armor
Sussex: Contact Damage
Flockers: Small (aka normal-sized) chickens that attack in groups.
Old English Game Bantam: Standard Flockers
D’Uccle: Extra wings, better flight.
Sebright: Creates light that can disturb stealth, special drops.
Serama: Smallest and fastest.
Phoenix: Flame Damage, special drops.
Sneakers/ Hiders: Stealth attackers who hide in the environment and ambush.
Hackle: Plant-like camouflage
Sicilian: Industrial or rocky camouflage, and a grabbing attack with comb.
Cemani: Shadow camouflage.
Eggers: Use special eggs as projectiles. Always hens.
Legbar: Standard Egger attack
Easter Egger: Split attack.
Olive Egger: Sticky egg bombs.
Fighters: High strength minibosses with giant spurs.
Shamo: Standard fighter.
Sumatra: Gem-like spurs, has a multi-hit.
Aseel: Metal spurs, electrical attacks.
that is all of them maybe i will draw the boss chicken concepts... eventally. in the future... maybe....