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It's a red brick building with wooden doors and no doorbell.

"I was sure that he was already outside, but no, there was no sign of life. I rang the doorbell many times and nothing," said Mr Jorgensen.

Caernarfon Crown Court heard that he could not remember carrying out the fatal assault, but it was captured on the house's ring doorbell.

Resident Maximillian Bolling told KGO-TV he witnessed several birds die after perching on power lines and a resident’s doorbell camera captured footage of a bird falling after the sound of a loud pop.

Detectives are appealing for anyone with information, or who may have captured dash-cam, doorbell or other video footage, to contact them.