Monday, June 29, 2026
Science

Self‑destructive behavior among Hermann's tortoises on a Macedonian island is leading to 'demographic suicide'

On the strictly protected island of Golem Grad in North Macedonia, the tortoises are destroying their own population. During prolonged courtship, aggressive males are exhausting the females and frequently pushing them off the cliffs. Consequently, there are now one hundred males for every female cap...

Self‑destructive behavior among Hermann's tortoises on a Macedonian island is leading to 'demographic suicide'
Image: Phys.org
On the strictly protected island of Golem Grad in North Macedonia, the tortoises are destroying their own population. During prolonged courtship, aggressive males are exhausting the females and frequently pushing them off the cliffs. Consequently, there are now one hundred males for every female capable of laying eggs. This is the only known example of demographic suicide in the wild to date.

Originally published at Phys.org

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