No, you shouldn't. If you are considering what is best for the bird, do not keep a baby cardinal in the house. All birds (including cardinals) like a lot of living space, and a house is not a good example of a lot of living space.
It depends on the house. Just keep in mind the cardinal directions and that the sun rises in the east and sets in the west.
yes
Yes
keep it
no
if she keeps the baby out of her house it probably means she doesn't want it. so you have to keep the baby in its own small cage and keep it warm cos if it stays in the cage with its mother the mother will eat it.
Maggots do not actually bite, but you should keep them off and away form your baby.
Perhaps the cardinal sees herself reflected in the window and assumes it is another female cardinal trying to invade her territory.
your house door
What kind of pets? Anyway if they r cats, maybe u should try to keep the cat out of the baby's room. If a dog, u should put it outside? Try to keep all pets away from the baby until it's a bit older.
If it's a baby yes,but when bigger it should go to the outdoors.
The baby is teething you should probably get him or her oral teething gel.