Confidence votes 210. Antigone is considered a tragic hero, because tragic heroes have several qualities: They are royal, they have a tragic flaw that leads to their downfall, they have an unhappy ending, and lastly the character is worthy of concern. First, Antigone is royalty. This is shown through her bloodline in several ways.
The down feathers of eider ducks provide insulation due to lack of barbules and ability to fluff. Infrared image of a goose, showing its insulating capacities. Down feather structure is important for insulating properties. Eiders insulate their arctic nests with down feathers. Click/tap images for attribution and license information.
Down Insulation. With a warmth-to-weight ratio three times that of synthetic insulation, down is pound-for-pound the best insulator in the world. Down used for insulation is derived from geese, ducks, or other waterfowl, and is a byproduct of the process of raising these animals for food.