Any port in a storm

A cavity conservation postscript

A day or so after the last post, this little Striated Pardalote was seen utilizing the holes in the cross-member of a power pole.

Unlike the Spotted Pardalote which digs a nest tunnel in soft earth, the Striated Pardalote prefers to use a natural tree hollow if one is available. If not, a power pole will do! How hot (and cold) must it get inside that structure?