One swarm measured 60km (37 miles) long by 40km (25 miles) wide in Kenya’s north east, according to the Intergovernmental Authority on Development.
The visit comes ahead of Monday’s 75th anniversary of the liberation of the Nazi concentration camp at Auschwitz by Soviet troops.
The Duchess of Cambridge has launched a nationwide survey to ask ‘five big questions on the under-fives’.
The Met Office warned of freezing fog in the early hours.
The British Homing World Show of the Year is the largest pigeon show of its kind in Europe.
Boris Johnson: Britain will become global, trail-blazing country after Brexit
Britons urged to leave Chinese province at heart of coronavirus outbreak
Coronavirus timeline: How has the virus spread?
Former Black Rod submits bullying complaint against John Bercow
Bet365 boss was UK’s biggest taxpayer last year
Father and young daughter killed in Hull house fire