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.
POWDER DOWN BIRDS. by Carol Highfill. Anyone who has spent time around birds is very aware of the feathers, feather particles and feather dust which will be found around the area. But there are some species of parrots which produce an additional feather dander called powder. These birds - often known as the Powder Down Birds - are Cockatoos, Cockatiels and African Greys.