A male superb blue wren pecks at a broom bush and a gold petal falls. Before it reaches the ground the wren has the petal in his beak and he's off, away from his boring, brown mate who feeds next to her nest.
A few seconds' flight through the bush brings the male to a different female. He presents his bouquet.
The new girlfriend is impressed. Not only is she dazzled by the glittering feathers on his superb blue neck...but he's got a golden something flashing in his beak.
For a few seconds they mate.
Then the male flashes away to tend the nest he shares with his main female. She's not upset by his little jaunt because she keeps a friend on the side as well.
Little does her male 'mate' know--but none of the eggs in the nest that he tends are his!