Customs officials in the northern province of Quang Ninh seized 59,000 chicks, allegedly smuggled in from China, from trucks on National Highway 18 early Thursday.
Between 2 and 5 a.m. they stopped four trucks and found each carrying 14,000-15,000 five-day-old chicks.
The drivers could not produce papers showing the origin of the cargoes estimated to be worth VND300 million (US$14,400).
They were fined a total VND30 million.
Local authorities culled all the chicks as stipulated by regulations.