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 feathers help to keep a bird warm by trapping air close to the body, which insulates the bird from the cold. In addition to these basic feather types, some birds have additional types of feathers. Semiplume and filoplume feathers are also called display feathers. These feathers are typically found on males and are used to attract females during mating season.