11. It has a polygynous mating system and copulation is initiated with vocal communication. 12. Gorillas, which have a polygynous mating system , have smaller testes than other primates. 13. Their mating systems are highly variable and can include monogamy, polygyny, and polyandry. 14. Polyandry, though, is the most common mating system of dunnocks found in nature. 15. About 42 % of flowering plants exhibit a mixed mating system in nature. 16. These are unrelated birds which have a socially polygynandrous mating system . 17. Recent research indicates that the mating system of the mountain brushtail possum is variable. 18. Their mating system has also been described as successive polygyny. 19. The mating system of this lemur has not been reported. 20. The European pied flycatcher predominately practices a mixed mating system of monogamy and polygyny.
