Your Constitution score increases by 2, and your Charisma score increases by 1.

You have no idea how long you will live.

Chiwizards tend to be chaotically good.  That being said, they don't often do good deeds for humankind, but rather will do anything to save their fellow chickens.

You are the size of a large chicken (tiny).

Your base walking speed is 25 feet. You have a flying speed of 15 feet.

You cannot sustain flight for more than one turn.

As long as you are not restrained in some way, you cannot take fall damage.

You are a descendant of a red dragon.  You can use your action to exhale destructive fire energy in a 15-foot cone in front of you.  When you use your breath weapon, each creature in the area of the exhalation must make a dex saving throw. The DC for this saving throw equals 8 + your Constitution modifier + your proficiency bonus. A creature takes 2d6 damage on a failed save, and half as much damage on a successful one. The damage increases to 3d6 at 6th level, 4d6 at 11th level, and 5d6 at 16th level. After you use your breath weapon, you can’t use it again until you complete a short or long rest.

You have resistance to fire damage.

You can speak, read, and write Common, Draconic, and Chicken.

You have a max strength score of four.  When you roll your ability scores, take half the points, rounded up, granted to your Strength score over 4, and assign them to your other ability scores.

Your talons are exceptionally long and sharp for a chicken.  It's almost as if you have some dragon blood in you that has enhanced your ability to deal damage with them...

Starting at 1st level, you may make a melee attack action with your claws which deals 1d6 + your Dexterity modifier slashing damage.

This increases to 2d6 at 5th level, 3d6 at 11th level, and 4d6 at 17th level.

Every day, at dawn, you lay an egg that, when consumed by another creature, heals 2d4 + 2 hit points.  If the egg is cooked before being eaten, it heals 3d4 + 3 hit points. 

The egg must be eaten within the next two days, otherwise the creature must make a DC 12 Constitution check.  On a successful roll, the egg heals for half of what it normally would.  On a failed roll, the creature is poisoned until the next short or long rest, in which it spends an hour of its time clearing its bowels.  If there are any hostiles nearby during this time, the creature must make a Dexterity (Stealth) check to contest with the hostile's Wisdom (Perception) to see if it can crap quietly enough to go unnoticed.  Monsters with keen smell or hearing have advantage on this roll. 

Eggs eaten more than a week after they have been laid automatically poison the target and give no healing effects. 

You can eat your own eggs, however, you risk mockery and disgust from your companions if caught.

Your eggs healing effect increases to 4d4 + 4 (raw) and 5d4 + 5 (cooked) at 11th level and 6d4 + 6 (raw) and 7d4 + 7 (cooked) at 17th level.

Being a magical chicken, you have discovered how to permanently cast mage hand to help you perform tasks that are simple for other races. 

Your mage hand is special in that it is capable of wielding weapons, making unarmed attacks, and activating magical items.  Because of the additional energy required, your mage hand cannot be  more than 5 feet away from you.  It also cannot carry more than 10 pounds, like normal.

Because it is only one hand, you cannot perform any task that requires two hands, such as using a bow.

When using mage hand to attack with weapons that use Strength for its attack bonus, you can ignore your -3 Strength bonus and instead treat it as a +0.  Your Dexterity bonus, however, still applies to weapons that use it for its attack bonus.