I bought this pendant in Italy around 10 years ago, I think from Rome. I’ve always been curious as to what the bird with the sun above it (etched onto the red glossy background) represents. I was a child at the time... I only picked it up because I thought it looked cool without really asking what it is. Could it be a specific symbol in Italian culture/history?
The colour red is associated with the blood of Christ and with the Holy Spirit.
The fact that you bought it in Italy (Rome) supports this, as there is a big christian community as well as many pilgrims and tourists visiting Rome and Vatican City.