Incubation
Definition
Incubation is the period during which a parent penguin keeps the egg at a constant temperature (approximately 36-38 °C) to allow embryonic development. Incubation duration varies by species, ranging from about 32 days in little blue penguins to roughly 65 days in emperor penguins. In most species, both parents share incubation duties in shifts lasting days to weeks. Emperor penguins are the extreme case: the male incubates alone for the entire period while the female forages at sea. Incubation failures due to abandonment, predation, or cold exposure are a major source of reproductive loss.
Related Terms
A brood patch is an area of bare, highly vascularised skin on a penguin's belly that develops during the breeding season to provide direct heat transfer to the egg.
A brood pouch is a fold of feathered skin on a penguin's lower abdomen that covers and insulates the egg during incubation.
An egg tooth is a small, hard, calcified projection on the tip of a hatchling penguin's upper bill, used to break through the eggshell from the inside during hatching.
Related Species
Species where incubation is especially relevant.
Frequently Asked Questions
What does incubation mean in penguin biology?
Incubation is the period during which a parent penguin keeps the egg at a constant temperature (approximately 36-38 °C) to allow embryonic development. Incubation duration varies by species, ranging from about 32 days in little blue penguins to roughly 65 days in emperor penguins. In most species, both parents share incubation duties in shifts lasting days to weeks. Emperor penguins are the extreme case: the male incubates alone for the entire period while the female forages at sea. Incubation failures due to abandonment, predation, or cold exposure are a major source of reproductive loss.