Conservationists have been striving to preserve a rare bird species in the United Kingdom, with recent progress largely credited to the mating success of a remarkably prolific male bird named AU. This 10-year-old bird has fathered 16 offspring, with 10 born in the last two years, playing a crucial role in sustaining the Montagu’s harrier population in the UK.
Montagu’s harriers are migratory birds that breed in Europe during spring after spending winters in Africa and parts of Asia. Despite being listed as a species of least concern globally, their population is declining. In the UK, the Royal Society for the Protection of Birds (RSPB) notes a rapid decline in these already rare birds, with only 30 breeding pairs in the 1950s, dropping to zero in the ’70s, and then gradually recovering to 13 in the mid-aughts before another decline.
The successful breeding efforts of AU, nicknamed the “golden boy,” have significantly boosted the species in the UK. His acrobatic mating displays attracted three females this year, resulting in the birth of six chicks. Conservationists are optimistic that AU’s male offspring will return to the UK to breed in the future, with two of his sons from 2025 already spotted in the country.
To protect the new hatchlings, the nests are located in a confidential area on a British farm, shielded by barriers to shield them from predators and other dangers. The RSPB has affixed satellite trackers to two juvenile harriers for the first time, enabling them to monitor the birds’ migration patterns and potential return to the UK for breeding, providing valuable data for conservation efforts.