I recently Found to baby birds out in the streets . I took them and looked for the nest but i was unable to find it so i took them inside and put them in a container with a towel in it and a heating pad on low heat cuz the bird only have little puffy feathers but still bare skin but i fed them formulas but it came to one day that i was feeding them but one of the birds wasnt chirping or wasnt even trying to open its mouth so i can feed it but it poops,moves,and looks perfectly fine but im woundering if there is a problem with the bird!!!And also i had it for a day .