Plastic adorns the nests of birds fit for a fight

[philip]

BBC News - Plastic adorns the nests of birds fit for a fight

"The white plastic clearly functions as a threat to other individuals of the same species - to other kites. It's basically a 'keep away, no trespassing' signal. A comparison with humans would be the notices placed on the gates of certain nice houses which say 'beware, guard dog'.

[suunto]

Originally Posted by philip

BBC News - Plastic adorns the nests of birds fit for a fight

This also was in Science CiteTrack: This Week In Science, where it was noted that "The amount of decoration placed decreased with age and, surprisingly, lower-quality individuals do not "cheat," going out of their way to remove material experimentally placed in their nests."