I have a White Leghorn chick that is about 7-8 weeks old. She has some very ugly feathers, in a sickly way. They do not look like they are growing properly because they look like just the stem of the pin feathers are growing and nothing else. I can see her skin and by her wings it looks a little irritated, I don't know if it is from her scratching up against something or if it's from a bug. She also lays down all the time. For example, whenever she eats or drinks she has to lie down. I took her outside yesterday on a nice sunny day and she still laid there. She's a very big bird so I don't know if she's just lazy or if something is wrong. Also, every time she poops it is very runny, but it is usually not discolored. She tends to poop a lot. She sneezes from time to time, but its not constantly. She's just starting to grow a waddle and her comb is getting larger and they aren't bright red yet. She eats and drinks regularly.
If somebody could please help me out and give me some tips on what I should do, it would be greatly appreciated!