Your griffon character has several abilities that come as part of being one of the griffons.
Ability Score Increase: Your Strength score increases by 2. Your Wisdom increases by 1.
Age: Griffons mature much more slowly than humans, reaching maturity after twenty years and sometimes living well towards two hundred years.
Alignment: Griffons are prideful creatures with a selfish streak, but tend to abide promises given, leading to a very neutral outlook on life for most griffons.
Size: Your size is Medium.
Speed: Your base walking speed is 40 feet.
Four-Legged: Being a four legged creature, you can bear greater weights (50%) than a human of the same Strength without being encumbered. Any roll to avoid becoming prone is made with advantage.
Languages: You can speak, read, and write Common and Sylvan. Sylvan is a musical language of fey creatures, and their sing song can find its way into other languages.
Wings: Your base flying speed is 25 feet. You cannot fly if you are wearing armor you are not proficient in, armor not tailored to accommodate your wings, or a backpack not specially tailored to your wings. While flying, you are vulnerable to piercing damage, and you have disadvantage on Strength checks to interact with objects that are on the ground. You fall to the ground at the end of your turn unless you move at least half your fly speed during your turn.
Sharp Beak: You have a natural bite attack that deals 2d4 slashing damage. You are proficient with this weapon.