A family of ducks crossing a busy Perth freeway has caused a six car pile-up during the morning peak hour rush.

Vision caught by traffic cameras shows two ducks and five ducklings crossing five lanes of city-bound traffic on the Kwinana Freeway near Canning Highway about 8am this morning.

Cars came to a grinding halt to wait for the ducks to cross, and an accident ensued further south involving six cars.

Police say there were no injuries reported.

Meanwhile, the ducks were trapped crossing the freeway by a concrete barrier separating the road from the centre rail line. Loading Twitter content

The vision shows several cars parked up, including a bus, with people trying to shepherd the ducks back to safety.

It's unclear how the ducks got onto the freeway, which is guarded by a conc

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