Srath Sona (Happy Valley) - A' Chraobh air a' Chnoc (On the Hill There is a Tree)

Tha a' chlann a' gabhail cuairt gu mullach a' chnuic gus am faic iad seann chraobh-daraich. Today the children go and visit a very old oak tree where some birds have made a nest - what's that hiding inside?