Sky-gazers spot rare and vivid 'mother-of-pearl' cloud in Scotland

Sky-gazers spot rare and vivid 'mother-of-pearl' cloud in Scotland

Is it a bird, is it a plane? No, it's a rare 'mother-of-pearl' cloud! Rarely seen in the UK, the clouds tend to form in very cold and dry conditions

Rare ‘mother of pearl’ clouds spotted over Scotland

Iridescent clouds formed of ice crystals are usually found in extremely cold air above polar regions

Strange 'alien' rainbow cloud spotted by locals across Scotland last night

Many people in Scotland saw an unusual cloud in the sky on Sunday night, and were keen to share photos of the "alien" and "breathtaking" rainbow-coloured formation.

Unusual 'mother of pearl' cloud spotted over the UK in rare sighting

Nacreous clouds are rarely visible in the UK and require very low temperatures to appear in pearl-like colours.

Rare 'mother-of-pearl' cloud spotted in Scotland

Stunning nacreous cloud captured by BBC Weather Watchers in Scotland.

Beautiful images capture rare nacreous clouds in Scotland

Cloud spotters in Scotland were treated to a rare sight in recent days as beautiful nacreous clouds appeared in the sky.