Other research has shown birds incorporate plastic, glass, and even cigarette butts into their nests. "Magpies may use the anti-bird spikes not just as ordinary nest material, but specific ...

Dutch doctoral student Auke-Florian Hiemstra excavated a bird nest, and made a startling discovery. From McDonald's lids to face masks, the nest was built with layers of human trash — the oldest ...

Nest-building isn't just instinct. Birds can learn from others, letting groups within one species develop their own distinctive nest-building traditions. Accessibility links.