Banham Zoo is delighted to announce the birth of twin cotton-top tamarins (Saguinus oedipus), a critically Endangered primate species, marking an important milestone in our ongoing commitment to global conservation. Six-year-old Belle, who arrived at Banham Zoo two years ago, has formed a strong bond with our resident male, Barnard, also six years of age. This birth is the pair’s first, and both are proving to be exemplary parents. Barnard has assumed the role of vigilant protector, while Belle is nurturing the young with unwavering care, carrying them close, feeding them attentively and ensuring their well-being. In cotton-top tamarins, parental cooperation is vital; both the mother and father share the responsibility of carrying the offspring, who are typically born weighing just 40 grams. As the twins grow more adventurous, their sexes will be determined and names selected in due course. The birth of these twins is a moment of celebration not only for Banham Zoo but for the species itself. Cotton-top tamarins are classified as Critically Endangered by the IUCN Red List, with an estimated 6,000 individuals remaining in their native forests of north-western Colombia. Their numbers have plummeted due to extensive habitat destruction, illegal wildlife trafficking and historical exploitation in biomedical research. These new arrivals are a beacon of hope in the battle against extinction. It underscores the vital role that ethical zoological institutions play in the preservation of our planet’s biodiversity. Netanya Noy, Team leader of Primates at Banham Zoo, said: “We are extremely delighted with cotton top twins. This is not only great for the breeding programme of this critically endangered species, but also a great way to educate the public with our conservation projects for smaller species.” Through breeding programmes, education, and support for conservation initiatives, Banham Zoo continues to contribute meaningfully to the survival of this charismatic yet sadly threatened species. We invite the public to join us in celebrating this joyous occasion and to learn more about how they can support conservation efforts for cotton-top tamarins and other endangered species.