Found a Yellow chick, need more information about it. (1 Viewer)

I found this injured yellow bird while walking my dog. It was after a thunderstorm. I guess it fell from its nest. I searched for the bird type in this location and found out that it might be an Golden Eurasian Oriole. I took it to the same spot and waited for its mom to return by keeping it on a branch 3 days, went far enough to spot if the parents come but they didn't, i did see a yellow bird far away but it didn't care about the chick. So im keeping it until it can learn to fly and then I'll release it. I further noticed the yellow bird was not golden Eurasian Oriole but rather a Black hooded Oriole. The chick can fly for a few meters then it falls down, im keeping it warm and feeding it fruits and insects. Its fledging right now from what i have read. For now i feed it ebery hour, it recognizes my voice and looks healthy, but i want to ask why doesn't it have hair on its head? Any information on it would be very appreciated.
Here's a photo of it.
http://imgur.com/gallery/bIDlkQz

Hi

Well done I hope it goes well


I found this picture it seems the bald head will grow later


http://orientalbirdimages.org/birdimages.php?action=birdspecies&Bird_ID=2283&Bird_Image_ID=36720&Bird_Family_ID=

Steve