Pygoscelis adaliae

prenatal development duration

• Bergtold 1917: 36 days (max)
• Bergtold 1917: 37 days (single measurement)
• Bergtold 1917: 33 days (min)
• Bergtold 1917: 31 days (single measurement)
• Bergtold 1917: 34 days (single measurement)