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
Bald eagle its common and specific scientific names from the distinctive appearance of the adult's head. "Bald" in the English name is derived from the word "piebald", and refers to the white head and tail feathers and their contrast with the darker body. The genus name is New Latin: "Haliaeetus" (from the ), and the specific name, "leucocephalus", is Latinized () and (). The bald eagle was one of the many species originally described by Linnaeus in his 18th century work "Systema Naturae", under the name "Falco leucocephalus". There are two recognized subspecies of bald eagle: The bald eagle forms a species