Macaroni Penguin | The Complete Guide to the Sub-Antarctic’s Golden-Crested Penguin
Emily has over 15 years’ wildlife experience, with a decade working with gorillas including field research in remote Africa, and supporting conservation initiatives. Since 2017, she guides onboard expedition vessels in the polar regions and works as a Marine Mammal Observer, protecting marine life at sea.
Macaroni Penguin
Eudyptes chrysolophus
Macaroni penguins are the most widespread of the crested penguins; first described by German naturalist Johann Friedrich von Brandt in 1837 when visiting the Falkland Islands. These bold and charismatic seabirds embody both elegance and eccentricity, earning their name from the 18th-century English term 'macaroni' a word once used to describe not pasta, but a man who dressed with excessive flair – relating to their flamboyant orange feather plumes.
They are among the most numerous penguin species, forming vast colonies that can number in the hundreds of thousands. The cacophony of braying calls, constant flurry of feathers, and endless drama of territorial squabbles; make these true dandies of the penguin world a spectacle not to be missed.
Physical characteristics
Macaroni penguins are from the genus of crested penguins. Both sexes are similar in appearance with subtle sexual dimorphism, males are around 15-20% larger than females. These medium sized seabirds have dark heads, a wide brown-orange bill, red eyes, and pink feet with claws for traction when traversing rocky terrain. Their most distinctive feature is their crest of yellow, orange feathers above their eyes, that flow from the middle of their forehead.
Their distinct look of wearing a tuxedo is a form of camouflage known as, countershading, aiding in protection against predators. From above their black backs blend in with the dark ocean, and from below their white bellies merge with the sunlit surface waters.
Size: 68 – 70 cm
Weight: 4 – 7 kg
Lifespan: 10 – 15 years
Ave. Dive Depth: 15 – 60 m
Habitat and distribution
Macaroni penguins have a circumpolar distribution, breeding on many sub-Antarctic islands throughout the South Atlantic and Indian Oceans. The largest colonies are found on South Georgia, the South Sandwich Islands, and the South Orkney Islands, with other significant populations on Bouvet Island, the Prince Edward Islands, the Crozet Islands, and Heard Island. In the Falkland Islands – the northern limit of their range - they are summer visitors, with small numbers breeding alongside southern rockhopper penguins.
They favour steep, rocky coastlines for breeding, often nesting amid tussock grass or on exposed cliffs where colonies can stretch for kilometres. In winter, they are highly pelagic, dispersing across the Southern Ocean, foraging in cold open waters in close proximity to the Antarctic Convergence.
Behaviour and breeding
Breeding season and courtship
The breeding season begins in October – November, when adults return from winter foraging to reclaim their nesting sites. Highly social birds, macaroni penguins breed in densely packed colonies that can exceed 100,000 pairs.
Pairs are generally monogamous for the season, often reuniting at the same site year after year. Females reach sexual maturity at five years old, with males maturing a year later. Courtship rituals are typically instigated by males and feature exuberant bowing, mutual preening, and synchronized trumpeting displays, accompanied by vigorous head-shaking.
Eggs and incubation
Females typically lay two eggs in November, though usually only the larger second egg hatches successfully. The smaller first egg is often abandoned, with incubation efforts focussing solely on the second egg – an unusual trait shared by all crested penguin species. Both parents share incubation duties, alternating shifts over roughly 33 - 37 days, while one incubates the egg, the other forages at sea.
Chick rearing and crèches
Chicks hatch from December to early January. For the first few weeks, one parent remains with the chick while the other forages. Once the chick is strong enough, it joins other chicks in a crèche; gathering in numbers offers protection from predators, and aids with thermoregulation. At this stage, both parents can forage simultaneously, returning regularly to feed their chick.
Fledging, moulting and winter dispersal
By February, chicks have developed their waterproof plumage and are ready to fledge. Following fledging, adults return to the ocean to forage and replenish their energy reserves before undergoing their annual catastrophic moult. This moult which can last over 3 weeks is extremely energy intensive; during this time, they remain ashore and fast whilst their old feathers are replaced.
Once moulting is complete, adults become highly pelagic, returning to sea from April to October over winter. They make extensive foraging trips until the following breeding season begins.
Diet and feeding habits
Macaroni penguins are thought to be the largest consumer of marine resources among sea birds, estimated to consume over 8 million tonnes of prey per year. They are pelagic foragers, often traveling distances of 50–100 kms from their colonies, catching most of their prey through means of pursuit-diving. Antarctic krill form the bulk of their diet, especially during the breeding season. Though their diet varies seasonally, and is supplemented by squid, crustaceans and small fish such as myctophids, and icefish.
Like some other penguin species, macaroni penguins have been known to swallow small stones, which are thought to help grind crustacean shells and aid with buoyancy.
Predators
Macaroni penguins face a range of predators. In the water, marine predators include fur seals, leopard seals, sea lions, sharks and orca (killer whales), specifically Type B, an ecotype known to include penguins in their diet.
On land, avian predators such as, giant petrels and skuas pose a significant threat, and in the Falkland Islands, striated caracara will opportunistically take eggs and chicks. The snowy sheathbill can be a nuisance; these scavengers often distract feeding chicks to steal freshly regurgitated krill directly from adults.
Depending on location, southern elephant seals are a potential danger; although they’re not looking to prey on penguins, they can accidentally crush the penguins under their sheer size and motion as they galumph across shared terrain.
Conservation status
The International Union for Conservation of Nature (IUCN) currently classifies the macaroni penguin as vulnerable. There are an estimated 6.3 million breeding pairs, with the current population trend decreasing.
Macaroni penguins face several significant threats. Their primary food source, Antarctic krill, depends on sea ice for feeding and breeding. Rising ocean temperatures and shifting sea-ice patterns are altering krill distributions, which may force penguins to travel farther and expend more energy while foraging
Commercial fisheries operating in the Southern Ocean may further increase pressure on food resources by harvesting Antarctic krill, creating competition and reducing prey availability. They also pose an additional risk through incidental bycatch.
Invasive mammals, including rats, mice, cats, and rabbits, are present on several sub-Antarctic islands and can pose a significant threat by disrupting habitats and spreading disease. At present, however, their impacts on macaroni penguin populations are thought to be minimal.
Where to see them in the wild
South Georgia
South Georgia is home to an estimated 3 million breeding pairs of macaroni penguins, providing spectacular wildlife viewing opportunities. Large colonies can be found at landing sites such as, Cooper Bay, and Hercules Bay, while at Elsehul, the penguin’s nest along cliff edges, offering breath-taking views from the comfort of the zodiacs.
Falkland Islands
In the Falkland Islands, macaroni penguins are present in much smaller numbers, nesting alongside rockhoppers on steep cliff tops.
South Shetland Islands
In the South Shetland Islands macaroni penguins can sometimes be observed at Fort Point; and occasionally lone individuals are spotted mingling with chinstrap or gentoo colonies such as, on Half Moon Island, one individual nicknamed, Kevin has been observed returning across multiple seasons in amongst the chinstraps.
When to book your trip
October – November:
Adults return to their colonies, courtship and nest-building can be observed – though some macaroni penguins’ nest directly on the tussock grass.
December – January:
Peak breeding season, chicks begin hatching with constant activity as parents alternate guarding and foraging duties.
February – March:
Chicks grow rapidly, forming crèches prior to fledging. Adults undergo their catastrophic moult before returning to sea.
Responsible wildlife viewing
At Secret Atlas, minimising our impact on wildlife is extremely important. We adhere to strict wildlife viewing guidelines established by the International Association of Antarctic Tour Operators (IAATO). We maintain a minimum distance of 5 meters (15 feet) at all times, moving quietly and slowly and avoiding the use of flash photography. The penguins always have the right of way. Responsible wildlife viewing of penguins protects breeding success and reduces stress.
Fun Facts
Macaroni penguins, like other crested penguins, have a remarkable egg-laying habit: they lay two eggs but typically discard the first smaller egg. This phenomenon, known as extreme egg dimorphism, remains an evolutionary mystery that continues to puzzle scientists.
There are a few rare cases of interbreeding between rockhopper and macaroni penguins; these hybrids are known as Rockaroni penguins.
Macaroni penguins can process ingested salt thanks to a specialised supraorbital gland that contains a network of nerves & blood vessels filtering salt from their blood.
Macaroni penguins swim at an average speed of 15 km/h (9.3 mph) with underwater bursts of up to 24 kph (15mph).
Macaroni penguins are thought to be the largest consumer of marine resources, estimated to consume over 8 million tonnes of prey per year.
Macaroni penguins take their name from the 18th -century term, “macaroni” describing someone who dressed extravagantly – referring to the flamboyance of their striking golden crest.
Macaroni penguins are highly pelagic, when dispersing after the breeding season they can range over 3 million square kilometers.
FAQs
What is the diet of the macaroni penguin?
The diet of the macaroni penguin consists primarily of Antarctic krill. Though there is seasonal variation, they also consume squid, crustaceans and small fish such as myctophids, and icefish.
Where does the macaroni penguin live?
Macaroni penguins have a circumpolar distribution, breeding on many sub-Antarctic islands throughout the South Atlantic and Indian Oceans.
Why is it called a macaroni penguin?
Macaroni penguins take their name from the 18th -century term, “macaroni” describing someone who dressed extravagantly – referring to the flamboyance of their striking golden crest.
How tall is a macaroni penguin?
Macaroni penguins can reach 70 cm in height.
What does a macaroni penguin look like?
Macaroni penguins have dark heads, a wide brown-orange bill, red eyes, and pink feet. Their most distinctive feature is their crest of yellow, orange feathers above their eyes.
What does a macaroni penguin sound like?
Follow this link to hear the sound of a macaroni penguin: https://youtu.be/Q1lp0NP7tD0?si=yDCyZo5sZPgaCpIq
How fast can a macaroni penguin swim?
Macaroni penguins swim at an average speed of 15 km/h (9.3 mph) with underwater bursts of up to 24 kph (15mph).
Are macaroni penguins endangered?
Macaroni penguins are currently classified as Vulnerable by the IUCN, with populations declining due to climate change and food availability.
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