Crate day antics in four wheel drives have destroyed the eggs of endangered birds nesting along a Canterbury river.
There's several colonies of the Tarapiroe, black fronted terns and banded dotteral nests along the Ashley Rakahuri river.
But despite signage warning people away from the birds, last Saturday dozens of four wheel drivers ripped up and down the river sending rocks flying into nests and precious birds scattering.
The Ashley Rakahuri Rivercare group has been monitoring the damage done on crate day for several years.
Its spokesperson Grant Davey speaks to Lisa Owen.
