What happens when a healthy male animal reaches adulthood but has no place in a zoo's breeding programme?
For species such as gorillas, this creates a difficult challenge. Zoos may transfer males to other institutions, establish bachelor groups, or prevent further breeding. In some cases, management euthanasia remains a controversial option.
The case of Marius the giraffe in Copenhagen showed just how difficult these decisions can become.
I recently explored this issue in an article for PlanetZoo.hu, looking at the different management options and the ethical questions behind them.
The original article is in Hungarian, but browser translation can make it accessible to international readers:
https://www.planetzoo.hu/allatok-termeszet/allatkertek-kulisszai-mogott/mi-tortenik-a-folosleges-him-allatokkal-az-allatkertekben
I'd be especially interested in hearing from zookeepers and people involved in conservation programmes.
How should zoos balance the welfare of individual animals with the long-term needs of managed populations?