As Covid-19 threatens conservation work, Whipsnade Zoo is hoping for rhino breeding success.
What’s it like to look after the last two northern white rhinos on the planet? When the mother dies the feisty teenage daughter will become the very last of her species
This week's round-up also features a watery music festival and a bear with a sore head.
To prevent the subspecies from being lost forever, scientists have artificially inseminated embryos from their eggs using the frozen sperm of two dead males.
By Clare Spencer
BBC News, Ol Pejeta Conservancy, Kenya
BBC World Service
Conservationists are hailing the tentative recovery of Africa's critically endangered black rhinos.
The latest figures show there's been a modest annual increase in the black rhino population over the last six years.
Their numbers are thought to have grown to more than 5,600 - according to a report released by the International Union for Conservation of Nature on Thursday.
The rhinos' recovery is being attributed to ambitious protection efforts against poachers.
He is one of only an estimated 40 of the endangered species born in the UK in the past 20 years.
There are only two northern white rhinos left in the world.
Zoo keepers have welcomed it as "brilliant news" for the future of the "near threatened" species.
The conservation group WWF has rejected the results of an inquiry that partly blames the organisation for a botched transfer that led to the deaths of 11 rhinos last year, the Reuters news agency has reported.
The endangered black rhinos were moved from to Tsavo National Park to protect them from poaching.
But they were not able to digest high levels of salt in their drinking water in the park, which led to their deaths.
Before the government moved the rhinos, samples of the water had been taken but the results were not considered, the tourism minister said at the time.
According to the inquiry, WWF applied pressure on Kenya Wildlife Service (KWS) to speed up the move.
WWF has denied the accusations, saying concerns about water quality were never raised.
"We would never push for a translocation to go ahead against the recommendations of the relevant experts," the organisation said in a statement. "This was a tragedy we hope will never be repeated."
Estimates suggest there are fewer than 5,500 black rhinos in the world, all of them in Africa and some 750 in Kenya.
Poaching poses a significant threat to the population.
- Copyright: Ami Vitale
Scientists have achieved another milestone in the creation of the next generation of northern white rhinos, aimed at bringing back the rare animal from the brink of extinction.
Using eggs from the only two surviving northern white rhinos, both in Kenya, and frozen sperm from two males, who are both dead, researchers in Italy have created embryos.
The embryos are currently being stored in liquid nitrogen and will be transferred into a surrogate mother soon, the Kenya Wildlife Service says.
But there is still a "very long way to go", according to the head of Kenya's Ol Pejeta Conservancy Richard Vigne, where the two remaining northern white rhinos live under armed guard.
The gestation period for the rhino is between 15 and 16 months.
The embryos were created at the Aventea Laboratories in Italy and the whole process has been an international effort, including organisations from Germany and the Czech Republic.
Rhinos are the second-largest land mammal after elephants. The white rhinoceros consists of two sub-species - the southern white rhino and the much rarer and critically endangered northern white rhino.
Poaching is the primary threat facing all rhino species.
A southern white rhino has given birth after artificial insemination, raising hopes for the northern white rhino population.