The birds were initially seen all in the sky by a walker, who returned to the road around an hour later and found them all dead across the road and in the hedges!
The starlings were spotted on Tuesday by passer-by Hannah Stevens near Llyn Llywenan, north of the village of Bodedern in Wales.
On her way back from a Doctors appointment just an hour later they were all dead.
The couple contacted the police and the Animal and Plant Health Agency who they say are looking into the incident.
It currently remains a total mystery!