"All my life, a bird was nesting here." Biologist stunned by unusual materials found packed inside bird nest: 'The oldest ...

Each year, these birds typically build new, bowl-shaped nests using leaves, rushes and reeds. But, while nesting in cities, they often supplement these natural, biodegradable materials with man ...

The researchers noted that old nesting material can be host to harmful parasites like red mites and too much plastic in the nest increases the risk of entanglement for the birds, sometimes ...