Species Survival Breeding Programmes

Species Survival Breeding Programmes are the most powerful argument for zoo ethics, having rescued the California condor from just 27 wild birds in 1987 to over 500 today. Research shows 90% of captive-born condors released into the wild survive at least one year, a rate matching wild-reared birds. This outperforms #3 in evidence-based outcomes, yet critics note that for every success like the Arabian oryx, dozens of smaller species languish in genetic bottlenecks. The average captive-bred mammal retains only 72% of wild genetic diversity, making reintroduction far less viable than proponents claim.