I saw something really cute today - a crow (which incidentally had albino splotches on its wings) was playing with an empty plastic bottle, rolling it from side to side then jumping on top of it. Once it saw me it strutted away, almost as though it was embarressed to be seen playing. Crows are very intelligent and resourceful birds but this sighting was a first for me.
Of course though, plastic litter poses a threat to animals. Birds and other animals can ingest small pieces of plastic which can poison them or they can get trapped in torn plastic or bottles. So all plastic waste needs to be disposed of carefully and where possible alternatives should be found for plastics.