help again pleaseeeeee & thank-you

hello again and again i am lin & a new mama or auntie 2 my little boy chicken----been babysitting 4 short while anyway my little boy is in my HEART bigg time -----what i need help with is SORRY NOT IN ORDER (1) knowing what right / wrong I AM SCARED MY BOY GOING 2 GET SICK >>>>>>>>>>>>...SO PLEASE how do i know if he sick / vomit or poop alot or lay down alot or ???????? (2nd) what kind or what are some the fruits i can give him till i can get chicken food sunday or monday 4 sure? (3rd) is bird seed or food the same 4 chicken and yes i know chickens are birds but they are not parketts etc etc or pigens etc etc / so is it ok 2 give 2 my little boy bird? or find food that saids chciken feed on it?????? (4th) daaaa can i train him 2 use a cat litter box?If yesss how??? (5th)he in my bathroom when i go out and 4 the nite etc >>>>so how do i know if he warm enough???? also know he plugged out feathersss because he was scared when he saw his sister being ate etc by a wild cat(s) and also bordem from being cooped up in box>>>my hrs i can only let run free in house 2 to 3 hrs a.m and p.m. SO I WORRY WILL HE BE COLD AND SAFE AT NITE *****sO what do i do?+++++++++++++++++======THANK-YOU 4 replys-------lin