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.
Underneath the contour feathers are down feathers. The purpose of down feathers is to trap air between the feathers and the birdâs skin to insulate it. Some birds, such as baby chicks, are born covered in down. Some birds that don't have the preen gland like pigeons and herons also grow powder down feathers.