The Queen was introduced to her young namesake - an eight-month-old elephant called Elizabeth - as she became zookeeper for a day in Bedfordshire.
Staff at Whisnade Zoo told the royal visitors the calf was "doing wonderfully in the herd" and was quickly learning how to work with the keepers - including having her teeth checked.
After getting a tour of the new care centre, which she officially opened, the Queen and the Duke of Edinburgh headed outside to feed one of Elizabeth's companions, Donna.
The seven-year-old cow seemed very keen to get her trunk of the bananas - quickly grabbing one from the Queen's hands.
She twice had to be pointed in the direction of the Duke after trying to seek out more treats.
The Queen and Duke of Edinburgh have arrived at Whisnade Zoo in Bedfordshire - and have quickly got the elephants on side.
The pair have been feeding some of the nine Asian elephants housed in the new Centre for Elephant Care at the Zoological Society of London site.
After carefully offering some bananas, the Queen was snuffled by Donna, one of the youngest members of the herd, who was keen for some more.
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The Duchess of Cambridge has been visiting RAF Wittering in Cambridgeshire to meet young air cadets.
She met Wing Air Training Corps from Bedfordshire and Cambridgeshire, who are taking part in a half-term skills development camp.
The Duchess also given privileged access to the tutor aircraft in which generations of RAF Air Cadets have had their first experience of flying.
She was talked though the controls of the Grob tutor, a light aircraft which cadets use each year for air experience.
She took up her role as royal patron and Honorary Air Commandant with the RAF Air Cadets in December 2015, taking on the post from the Duke of Edinburgh.
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