Pygoscelis
Definition
Pygoscelis is a penguin genus containing three species known as the brush-tailed penguins: Adelie (P. adeliae), chinstrap (P. antarcticus), and gentoo (P. papua). The genus name means 'rump-legged' in Greek, referring to the tail position. These three species have overlapping ranges across the Antarctic Peninsula and sub-Antarctic islands but differ in their dependence on sea ice: Adelies require it, chinstraps avoid it, and gentoos are flexible. As warming shifts the balance between ice-loving and ice-free habitats, Pygoscelis species are reshuffling their distributions across the Peninsula.
Related Terms
Related Species
Species where pygoscelis is especially relevant.
Frequently Asked Questions
What does pygoscelis mean in penguin biology?
Pygoscelis is a penguin genus containing three species known as the brush-tailed penguins: Adelie (P. adeliae), chinstrap (P. antarcticus), and gentoo (P. papua). The genus name means 'rump-legged' in Greek, referring to the tail position. These three species have overlapping ranges across the Antarctic Peninsula and sub-Antarctic islands but differ in their dependence on sea ice: Adelies require it, chinstraps avoid it, and gentoos are flexible. As warming shifts the balance between ice-loving and ice-free habitats, Pygoscelis species are reshuffling their distributions across the Peninsula.
Keep learning
Glossary entries define the language. FAQ answers common questions; guides carry the longer Survival Lab arguments.
More in taxonomyWhere this definition comes from
Reference bodies behind the taxonomy terminology. Links last checked August 5, 2026.
- IUCN Red List - Global conservation assessments and extinction-risk categories.
- BirdLife Data Zone - Species accounts, distribution, and population summaries.
- Australian Museum - Little penguin biology and coastal breeding behavior.