Bald-faced hornet Bald-faced hornet Dolichovespula maculata is a eusocial wasp of the cosmopolitan family Vespidae. Its colloquial names include the bald-faced hornet, bald hornet, white-faced hornet, white-tailed hornet, spruce wasp, blackjacket, and bull wasp. This species is a yellowjacket wasp, not a true hornet (genus "Vespa"). Colonies contain 400 to 700 workers, the largest recorded colony size in its genus, "Dolichovespula". It builds a characteristic large hanging paper nest up to 58 centimetres (23 in) in length. Workers aggressively defend their nest by repeatedly stinging invaders. "Dolichovespula maculata" is distributed throughout the United States and southern Canada, but is most common in
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