Marwell Zoo is celebrating the birth of three new arrivals, all born on the same night.
A pair of twin cotton-headed tamarins and a coppery titi monkey were welcomed by keepers on the same evening.
The births came just in time for Valentine’s Day, in what staff described as a “huge surprise.”
Amy Denny, animal team leader for primates and small mammals at Marwell, said: "It was a huge surprise and very unusual to find two different groups had given birth on the same night, but a complete coincidence.
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"We discovered the cotton-headed tamarins first which wasn’t too unexpected given we were anticipating it for a little while.
"But when the keeper moved on through Life Among the Trees to discover a titi baby that we had no idea about, we were pretty speechless."
The Critically Endangered cotton-headed tamarin twins bring their troop at Marwell to a total of nine.
Parents Gurt and Mico have now welcomed their fourth set of offspring, all of whom are named after characters from The Addams Family: Pugsley, Pubert, Fester, Lurch, and Sloom.
Ms Denny said: "We’ve had a string of success with cotton-headed tamarin births in the past couple of years – they have successfully bred every year since they were introduced to each other so they’re just a very compatible pair."
Fewer than 2,000 of the species are thought to remain in the wild.
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The coppery titi monkey infant is the second for parents Taco and Mr Titi.
Their first, Nacho, was born in January last year.
The zoo follows a hands-off approach, allowing the parents to raise their young with minimal interference.
Ms Denny said: "We will leave the young to their parents – we’re hands-off with our management.
"We won’t now do anything physical until they’re due their first vaccinations in 2027 when we will sex and microchip them as well."
The new arrivals can be spotted during half term, as Marwell is running its Wild at Heart week of activities.
