I have 2 chickens that have gone broody. So I decided to let them set. My silkie was setting on 6 eggs, but a few days later, she only had one. My husband says he saw her pecking at one of the eggs. She also moves from the nest after a few days and starts setting on different eggs in another nest. Is this common behavior ? I also have a black australorp who went broody, but she is on the nest for awhile, then off the nest for a while.. She leaves the nest for as long as 2-3 hours unattended. Is this common behavior ?