War Chicken

Rocket. If the war chicken moves at least 10ft. in a straight line and then uses its lay egg action, it can jump up to 20ft. high or 50ft. long. 

Unwavering Resolve. The war chicken will never leave the rider it has bonded with at birth unless it's rider has died, in which it will choose a new rider. 

Multiattack: The war chicken can make two peck attacks or use its lay egg once. 

Lay Egg: The chicken lays one egg, about 2 inches tall and 1 inch wide, in an oval shape. If eaten the egg will give the eater 1d10 hp. 

Peck: Melee Weapon Attack: +4 to hit, reach 5ft., Hit: 13 (2d10+2) piercing damage. 

Aura. If the war chicken's rider is wielding a halberd or glaive, the war chicken, as a bonus action, can give it's rider advantage on its attack roll. 

Cluck. If the war chicken takes more than 6 points of damage before its next turn, it can cluck, gaining 3 hp.