Complex sentence: The female incubates during the day, and though the male may relieve her when she leaves the nest to fee, it has been suggested he does not actually brood (Soderberg 1956).
Split into simpler sentences: The female incubates during the day, and though the male may relieve her when she leaves the nest to feed. It has been suggested that the male does not actually brood (Soderberg 1956).