Plastic-lined nests keep rivals at bay

Spanish birds protect homes by lining them with shopping bag scraps

Not just any bird can pull off the nest-full-of-shredded-shopping-bags look.

PRIME PLASTIC Nests built by three black kites of different ages (left to right, ages 3, 11, 22 years) illustrate the exuberance of plastic decoration used during the prime of life, possibly as a warning to intruders that defense will be fierce.