Less is known about the dangers posed by other types of garbage. “There’s a lot of emphasis on plastic,” Seif says. Yet animals encounter all kinds of crud, especially when they search for dinner on trash heaps. To find out what kinds of junk seagulls might be ingesting, Seif and her colleagues examined the stomach contents of 41 birds belonging to three gull species captured at a landfill in Newfoundland, Canada. Nearly 80 percent of the gulls had debris in their bellies. The researchers identified 284 pieces of junk, 59 percent of which were plastic. But they also discovered foam, cardboard, wax paper, metal, glass, drywall, fabric, rubber, and recognizable items like pieces of coffee cups, and rope.