Baby raccoon sounds.?

Went to a foreclosed property to inspect the over all condition of all buildings. In the chicken house it was quite dark and heard what sounded like Guinea pigs. As i got closer to the source of the sounds, there was a scream like you'd hear in a Alien movie. Came back in there better prepared to find a raccoon nest with four baby's. My guess is the mother made the last sounds. The babys?