The silhouette changed once again as the Victorian era drew to a close. The shape was essentially an inverted triangle, with a wide-brimmed hat on top, a full upper body with puffed sleeves, no bustle, and a skirt that narrowed at the ankles (the hobble skirt was a fad shortly after the end of the Victorian era). The enormous wide-brimmed hats were covered with elaborate creations of silk flowers, ribbons, and above all, exotic plumes; hats sometimes included entire exotic birds that had been stuffed. Many of these plumes came from birds in the Florida everglades, which were nearly made entirely extinct by overhunting. By 1899, early environmentalists like Adeline Knapp were engaged in efforts to curtail the hunting for plumes. By 1900, more than five million birds a year were being slaughtered, and nearly 95 percent of Florida's shore birds had been killed by plume hunters.