You are a fey.

Your Size is Medium. They have feathered avian wings that are usually the same colour as their hair. Their wingspans are around an average of 6-7 metres (making the wings an average of 3.25 - 3.5 metres each). 

Your walking Speed is 25 ft. You have a fly speed of 35 ft (you cant use your fly speed while wearing medium or heavy armour)  

They have feathered avian wings (hence the name) that are usually the same colour as their hair (and can be dyed like hair but like, magic dye or something bc dnd is usually set in like mideval fantasy so before hair dye existed) . Their wingspans are around an average of 6-7 metres (making the wings an average of 3.25 - 3.5 metres each). If one of their wings are cut off, they will grow back, but slowly (takes like a year and a half) this regrowth is infinite, so they wont stop regrowing. 

You gain proficiency in one skill of your choice.

Being so acquainted with the air. You may create a powerful burst of wind by flapping your wings really hard (or in game mechanics words, you know the spell gust of wind, once you cast this you can't cast it again until the end of your next short rest.) 

Your character knows at least three languages: Common plus two languages you roll or choose from the Standard Languages table. Knowledge of a language means your character can communicate in it, read it, and write it. Your class and other features might also give you languages.

The Standard Languages table lists languages that are widespread on D&D worlds. Every player character knows Common, which originated in the planar metropolis of Sigil, the hub of the multiverse. The other standard languages originated with the first members of the most prominent species in the worlds of D&D and have since spread widely.

Due to your fey nature, you are immortal and thus stop ageing once reaching 25 ( you can still be killed, this immortality just stops ageing and makes lifespan infinite, it doesnt make you unkillable).

Like all immortals, you are immune to both magical and nonmagical ageing effects. 

Some members of this species have horns or antlers, not all of them tho. This is purely aesthetic and does not grat any mechanical benifit

Being used to flying at dizzying heights and speeds, you can safely fly up to 15,240 metres (50,000 ft) anything above that the air will be too thin and you wont be able to breathe easily. Due to the temperatures at these hights you have resistance to cold damage. 

You have well trained eyes, giving you advantage on any checks that rely on sight. Alternitavley, you also gain disadvantage on any negative rolls to do with sight (save to avoid blindness condition from colour spray spell/any other bright light thing that gives temporary blindness condition, Etc). You also have darkvision. If you fly more than 50 metres up, you also gain an additional +2 to the aforementioned checks that require sight (perception, investigation, etc)(you will have to add this by your self, i could not get it to work lol) . (the name of the trait was either going to be eagle eye or birds eye view, i might update the name if i decide to lol)