Why spiders decorate their webs

The delicate web decorations spun by some orb-weaving spiders are a strange but well-known phenomena, but exactly why the spiders adorn their webs is unclear. Now a study by researchers in Australia suggests that the creatures use decorations to protect their webs from damage. A team has made a discovery in one spider species that suggests the spiders use adornments "tactically" to make their webs more visible to animals that might accidentally damage them.