Unkown skull

Unkown skull

Observation - Unkown skull - UK and Ireland. Description: Can anyone ID this skull, please. I think it is possible that of a bird due to the bone structure at the front and it is very light for its size (approx 8cm X 4.5cm). This is as I found it, with nothing else around it.

Can anyone ID this skull, please. I think it is possible that of a bird due to the bone structure at the front and it is very light for its size (approx 8cm X 4.5cm). This is as I found it, with nothing else around it.