Red kites sometimes put plastic objects in their nests Mike Read / Alamy Stock Photo
Birds may decorate nests with artificial objects and feathers to deter magpies and ravens from taking their eggs.
Many birds have been observed placing human-made objects in their nests, such as plastic, wires or even anti-bird spikes from buildings. Often, these things seem to have no role as insulation or structural support, and may make nests more conspicuous to predators.
at Nord University and at the University of…