Breeding time (Pardalotus striatus melenocephalus)

I came across three Striated Pardalotes flirting while walking the dogs on the beach. They are usually shy but stayed in a tree calling while some young children were swinging from a rope in the same tree. I soon seen why as soon as the children left the "successful" male showed his bride the burrow he'd prepared in the sand dune right under the tree. The "grit" on his face are grands of sand.