Is it normal that a parakeet eats newspaper on the bottom of their cage i give them bird ssed every day too.and they still eat it.i dont know if they are trying to make a nest.please help?

many birds like to have sand or gravel to "eat" it stayes in the gizzard and helps to digest their food. Your parakeet may be looking for some rocks on the ground. Try getting some gravel & grit at a pet store and spread a very thin layer in his cage. It may not stop him from tearing up the newspaper, but that could be why he is doing it. Or he could just be bored and doing it for fun. one time my bird did that, he had a seizure and died. :(