Humboldt Penguin vs Snares Penguin
Humboldt Penguins and Snares Penguins share the penguin toolkit — flippers, countershading, marine hunting — then spend it on different habitats and life histories. Humboldt Penguin: Humboldt Penguins are cold-current birds wearing a desert costume. They look like warm-climate penguins only if you ignore the ocean that actually feeds them. Snares Penguin: The Snares Penguin is what happens when an entire species bets on one remote island group staying dependable for a very long time. The comparison table is the raw material; the sections under it are the reading.
Humboldt Penguin
Snares Penguin
Size Comparison
Humboldt Penguin
56-70 cm
3.6-5.9 kg
Snares Penguin
51-61 cm
2.5-4 kg
| Feature | Humboldt Penguin | Snares Penguin |
|---|---|---|
| Conservation | Vulnerable | Vulnerable |
| Scientific Name | Spheniscus humboldti | Eudyptes robustus |
| Height | 56-70 cm | 51-61 cm |
| Weight | 3.6-5.9 kg | 2.5-4 kg |
| Lifespan | 15-20 years | 15-20 years |
| Population | ~23,800 individuals | ~25,000 breeding pairs |
| Diet | Anchovies, Sardines, Herring, Squid | Krill, Squid, Small fish |
| Habitat | Rocky coastlines, Desert coasts, Islands | Sub-Antarctic islands, Rocky shores, Olearia forest |
| Regions | Peru, Chile | Snares Islands (New Zealand) |
| Genus | Spheniscus | Eudyptes |
Conservation Status
Humboldt Penguin
VulnerableSnares Penguin
VulnerableScientific Name
Humboldt Penguin
Spheniscus humboldti
Snares Penguin
Eudyptes robustus
Height
Humboldt Penguin
56-70 cm
Snares Penguin
51-61 cm
Weight
Humboldt Penguin
3.6-5.9 kg
Snares Penguin
2.5-4 kg
Lifespan
Humboldt Penguin
15-20 years
Snares Penguin
15-20 years
Population
Humboldt Penguin
~23,800 individuals
Snares Penguin
~25,000 breeding pairs
Diet
Humboldt Penguin
Anchovies, Sardines, Herring, Squid
Snares Penguin
Krill, Squid, Small fish
Habitat
Humboldt Penguin
Rocky coastlines, Desert coasts, Islands
Snares Penguin
Sub-Antarctic islands, Rocky shores, Olearia forest
Regions
Humboldt Penguin
Peru, Chile
Snares Penguin
Snares Islands (New Zealand)
Genus
Humboldt Penguin
Spheniscus
Snares Penguin
Eudyptes
Key Differences
Not a second table — the reasons the numbers diverge.
Survival problem
Humboldt Penguin: Their whole breeding system depends on the Humboldt Current staying productive enough to deliver anchovies and sardines to colonies on otherwise harsh, dry coasts. Snares Penguin: Its breeding range is tiny, so any sustained change in nearby food supply, disease, or island conditions matters at species scale almost immediately. Those two sentences are the comparison’s spine — stats only make sense if they map back to the problem each bird is actually solving.
Size and mass
The Humboldt Penguin is only slightly taller on average — up to 70 cm and 5.9 kg against the Snares Penguin's 61 cm and 4 kg. That gap changes dive physics, fasting capacity, and how each bird spends energy on land and at sea.
Habitat logic
Humboldt Penguins use rocky coastlines, desert coasts, and islands; Snares Penguins use sub-antarctic islands, rocky shores, and olearia forest. There is little shared nesting or haul-out habitat between them. Habitat here is architecture, not scenery: shelter, predators, and access to prey decide who can breed successfully.
Separate ranges
Humboldt Penguins live in Peru and Chile; Snares Penguins live in Snares Islands (New Zealand). Non-overlapping ranges usually mean different currents, predator guilds, and fisheries pressure — which is why conservation headlines for one rarely transfer cleanly to the other.
What they hunt
Humboldt Penguins eat anchovies, sardines, herring, and squid; Snares Penguins eat krill, squid, and small fish. Distinct items on each list (anchovies, sardines, and herring versus krill and small fish) hint at different dive depths and foraging schedules. Both still lean on squid, so ocean productivity swings can hit them together.
Dive depth
The Humboldt Penguin reaches 150 m — around 1.3 times the Snares Penguin's 120 m. Depth buys access to prey that shallower divers never reach, and it is paid for in oxygen storage, muscle chemistry, and the time each foraging trip takes.
Abundance
There are roughly 2.1 times as many Snares Penguins as Humboldt Penguins — ~25,000 breeding pairs against ~23,800 individuals. Rarity is not the same as risk, but it sets how little has to go wrong before a decline becomes irreversible.
Shared risk band
Both sit at IUCN Vulnerable. Estimated numbers still differ — ~23,800 individuals for the Humboldt Penguin versus ~25,000 breeding pairs for the Snares Penguin. Even under the same IUCN label, trends differ: Humboldt Penguins are tracked as decreasing, while Snares Penguins are stable. A shared status means comparable risk class, not identical causes.
Key Similarities
Same family, different genera
Both are penguins in Spheniscidae, yet they sit in different genera (Spheniscus vs Eudyptes). That distance usually shows up as different colony style, crest or band patterns, and how hard each bird depends on a single prey or ice type.
Overlapping prey
They both take squid. Shared prey is a coupling: a krill or forage-fish crash can stress both populations even when colonies sit far apart.
Both Vulnerable
IUCN places both at Vulnerable. Treat that as a risk band, not a single storyline: the Humboldt Penguin and Snares Penguin can share a label while failing for different local reasons.
How to read this matchup
Read this pair as distant solutions to “how to be a penguin.” Size, genus, and risk already point different ways: Humboldt Penguin versus Snares Penguin, Spheniscus versus Eudyptes, Vulnerable versus Vulnerable. Use the profiles for depth — this page is the decision tree for which difference matters first.
About Each Species
Humboldt Penguin
Humboldt Penguins are cold-current birds wearing a desert costume. They look like warm-climate penguins only if you ignore the ocean that actually feeds them.
Named after the cold Humboldt Current, these penguins live along the coasts of Peru and Chile in one of the most arid environments inhabited by any penguin, nesting in burrows dug into guano deposits.
Full Humboldt Penguin profileSnares Penguin
The Snares Penguin is what happens when an entire species bets on one remote island group staying dependable for a very long time.
Endemic to the tiny Snares Islands south of New Zealand, this yellow-crested penguin has the most restricted range of any penguin species, yet maintains a healthy population thanks to the absence of introduced predators.
Full Snares Penguin profileFrequently Asked Questions
Which is bigger, the Humboldt Penguin or the Snares Penguin?
The Humboldt Penguin is larger — up to 70 cm and 5.9 kg — while the Snares Penguin reaches about 61 cm and 4 kg.
Are Humboldt Penguins or Snares Penguins more endangered?
Both are listed as Vulnerable. Numbers still differ: ~23,800 individuals for the Humboldt Penguin versus ~25,000 breeding pairs for the Snares Penguin. Trends: decreasing vs stable.
Do Humboldt Penguins and Snares Penguins live in the same place?
No meaningful range overlap. Humboldt Penguins: Peru and Chile. Snares Penguins: Snares Islands (New Zealand).
What do Humboldt Penguins and Snares Penguins eat?
Both take squid. Full lists: anchovies, sardines, herring, and squid for the Humboldt Penguin; krill, squid, and small fish for the Snares Penguin.
What is the biggest survival difference between Humboldt Penguins and Snares Penguins?
Humboldt Penguin: Their whole breeding system depends on the Humboldt Current staying productive enough to deliver anchovies and sardines to colonies on otherwise harsh, dry coasts. Snares Penguin: Its breeding range is tiny, so any sustained change in nearby food supply, disease, or island conditions matters at species scale almost immediately.
Are Humboldt Penguins and Snares Penguins closely related?
They are both penguins (Spheniscidae) but sit in different genera: Spheniscus (Humboldt Penguin) and Eudyptes (Snares Penguin). That is family-level relatedness, not a close sister-species pair.