Bald-faced hornet viable brood in the comb fragment. The physical nature of cues mediating natal comb recognition is unknown, though some researchers propose distinct cuticular hydrocarbon profiles allow wasps to recognize nest mates. "D. maculata" is characterized by low paternity, worker reproduction and queen-worker conflict. Divergent genetic interests between workers and their queen cause intra-nest struggle for control, which disrupts social organization. Because of haplodiploidy, workers are unable to mate. However, their unfertilized eggs become males. Workers and their queens are most related to their own sons. Natural selection will therefore favor those workers who produce their own sons rather than rearing
Black-faced woodswallow cessation of woodswallow decline.Storm-burning has produced a more open vegetation structure, which is beneficial for insect feeding and nesting by the woodswallows. Storm-burning is therefore thought to be essential for persistence of black-faced woodswallow habitat in the Cape York Peninsula. This also assists golden-shouldered parrot conservation by reducing their predation risk. Black-faced woodswallow The black-faced woodswallow ("Artamus cinereus") is a woodswallow. It is long. It is the most widespread species in the family Artamidae, living in Australia, New Guinea and the Sunda Islands, including Timor. The black-faced woodswallow is in length, and weighs . It has a blue-grey beak with