Complex sentence: This dimorphism clearly maximises their feeding opportunities during the non-breeding season when food is scarce.is panmixic, B. Rosemary Grant and Peter R. Grant 1989.
Split into simpler sentences: This dimorphism clearly maximises their feeding opportunities during the non-breeding season when food is scarce. If the population is panmixic, B. Rosemary Grant and Peter R. Grant 1989.