Birds
King Shag
Leucocarbo carunculatus · also called New Zealand king shag
Confined for its entire life to a single sheltered sound in New Zealand, a king shag is one of the rarest shag species on Earth, its total population numbering only in the low hundreds and concentrated at just a handful of breeding colonies.
Overview
The king shag, Leucocarbo carunculatus, is a Vulnerable seabird native to ocean and coastal habitat found only within a single sound system in New Zealand’s South Island. Its extremely small global population, complete lack of migration, and single-region breeding range make it one of the more geographically confined and conservation-critical shag species found anywhere in the world.
A species that has never needed to leave home
While many seabirds range across entire oceans, the king shag has spent its evolutionary history within one small, sheltered stretch of New Zealand coastline, a degree of site fidelity that leaves its entire global population dependent on the continued health of a single sound.
Status
Vulnerable, having remained relatively stable at a low level in recent years, though the species remains at risk given its extremely small total population and single-region breeding range.
King Shag: common questions
How rare is the king shag?
This species is one of the rarest shag species in the world, with a total population numbering only in the low hundreds, confined entirely to a single sheltered sound in New Zealand.
Does the king shag migrate?
No, this species remains within the same limited area year-round, showing no seasonal migration and relying entirely on local waters for food throughout its life.
What are the orange growths on a king shag's face?
This species develops small, fleshy orange growths called caruncles above the base of the bill during the breeding season, used in courtship displays to attract a mate.
Why is the king shag considered especially vulnerable?
This species breeds at only a handful of colony sites within one small region, making its entire population unusually vulnerable to disturbance, storms, or any other localised threat striking those few sites.