HAVE 8 EGGS LEFT 3 HAS HATCHED, AND I KNOW THAT THERE ARE CHICKS IN THE OTHERS , I GUESS THE EGGS ARE HEAVY , SO SUSPECT CHICKS INSIDE, BUT NO PIPING, OR NOISE. PLEASE LET ME KNOW HOW I CAN CHECK (AN EASY WAY ) TO FIND OUT IF THEY ARE ALIVE.. AND WHAT TO DO IF THEY ARE .. THANKS