California condors, a critically endangered species, can reproduce without mating, according to a study by conservation scientists at the San Diego Zoo Wildlife Alliance. | Reuters
Scientists confirmed that each condor chick was genetically related to its mother but neither bird was genetically related to a male. The two birds represent the first two instances of asexual reproduction, or parthenogenesis, to be confirmed in the California condor species, the zoo said.
Steiner said the discovery was particularly surprising, because both female birds were continuously housed with fertile male partners and had already produced chicks while paired with a male. Asexual reproduction has never before been confirmed in any avian species where the female bird had access to a mate.
Both chicks were underweight when they hatched, Steiner said. One was released into the wild and died at the age of two in 2003, while the other survived for eight years in captivity and died in 2017.
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