Hi Chris

shes sitting on hemp sawdust type, in terracotta pot which I will remove once chicks born and any unhatched eggs dealt with. She wont get off the nest without my help (every time shes gone broody over last couple of years shes refused to budge, so history of sitting tight).
When she gets off the nest, she does drink a lot, but not noticed the nest being damp

I may hose the lawn down tonight as had no rain recently, so this should make her undercarriage damp.