A policeman was fooled by a blackbird that was mimicking siren sounds in Oxfordshire, UK.

Simon Hills, a member of the roads policing unit, said the two-tone impression of a siren initially led officers to believe that a car was malfunctioning at the Bicester station.

Officer Simon said: 'I sat at my desk after a weekend off, and in the distance, I could hear the faint sound of what sounded like a police siren and, because we repair a lot of police cars here, I thought it was maybe one that was defective and the battery was starting to go flat.'

Upon investigation, it was discovered that the source of the deceptive sound was none other than a male blackbird, utilizing its remarkable vocal abilities both to attract a mate and assert its dominance over its territory.

He added: 'I came outside and looked up into the trees, and I could see the bird up in the trees, clearly mimicking the sirens in a really professional way.'

The officer joked: 'If it starts to put a uniform on and use some of its policing powers, then we might have to look at it.'

Phil Bruss, from the Berkshire, Buckinghamshire & Oxfordshire Wildlife Trust, shed light on the bird's behaviour, saying that the purpose of its melodious performance was to attract a mate and to ward off potential rivals from its territory.