I have 1 silkie that I hatched with some orpingtons and she was the only silkie that hatched. I had her and the orpingtons for about a week and then I ordered 25 bantam chicks, including silkies. After the first week of having the new arrivals I put my first silkie (named Jo~Ann) and put her in with the others. She liked them but not as much as the orpingtons so I let her in with them. When they got mature enough to make adult chicken noises I noticed Jo~Ann Made a 'cluck' sound and the rest made the normal chicken sound when they walked around or got chased. So I'm wondering why does Jo~Ann 'cluck' and the rest 'squawk' ?