Meet Laughing Kookaburra. Are They Laughing or Screaming?

Adult kookaburras pair for life and use the same nest hole, found in a tree hole or arboreal termite nest, each year. A breeding pair establishes a year-round territory that is also used by four to five of its grown young, which serve as helpers. These helper do their share of incubating the eggs, keeping the chicks warm, feeding their young siblings, and defending their parents' territory. All members of the group develop brood patches (a bare space on the breast with lots of blood vessels for warming the eggs).