Complex sentence: The male incubates these for about a fortnight, possibly being relieved by the female occasionally; he is also responsible for the care of the young, feeding them for the first week from his bill before they start to peck food from the ground.
Split into simpler sentences: The male incubates these for about a fortnight, possibly being relieved by the female occasionally. He is also responsible for the care of the young, feeding them for the first week from his bill before they start to peck food from the ground.