Little Blue Penguin vs Snares Penguin
Little Blue Penguin (Least Concern) and Snares Penguin (Vulnerable) sit on different rungs of extinction risk, which makes this matchup a conservation comparison as much as a field-guide one. Little Blue Penguin: The Little Blue Penguin survives by being small, coastal, and secretive. It is a night commuter living in a world that humans have made dangerously easy for predators. 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.
Little Blue Penguin
Snares Penguin
Size Comparison
Little Blue Penguin
30-33 cm
1-1.5 kg
Snares Penguin
51-61 cm
2.5-4 kg
| Feature | Little Blue Penguin | Snares Penguin |
|---|---|---|
| Conservation | Least Concern | Vulnerable |
| Scientific Name | Eudyptula minor | Eudyptes robustus |
| Height | 30-33 cm | 51-61 cm |
| Weight | 1-1.5 kg | 2.5-4 kg |
| Lifespan | 6-25 years | 15-20 years |
| Population | ~469,760 individuals | ~25,000 breeding pairs |
| Diet | Small fish, Squid, Crustaceans | Krill, Squid, Small fish |
| Habitat | Rocky coastlines, Burrows, Coastal forests | Sub-Antarctic islands, Rocky shores, Olearia forest |
| Regions | New Zealand, Southern Australia | Snares Islands (New Zealand) |
| Genus | Eudyptula | Eudyptes |
Conservation Status
Little Blue Penguin
Least ConcernSnares Penguin
VulnerableScientific Name
Little Blue Penguin
Eudyptula minor
Snares Penguin
Eudyptes robustus
Height
Little Blue Penguin
30-33 cm
Snares Penguin
51-61 cm
Weight
Little Blue Penguin
1-1.5 kg
Snares Penguin
2.5-4 kg
Lifespan
Little Blue Penguin
6-25 years
Snares Penguin
15-20 years
Population
Little Blue Penguin
~469,760 individuals
Snares Penguin
~25,000 breeding pairs
Diet
Little Blue Penguin
Small fish, Squid, Crustaceans
Snares Penguin
Krill, Squid, Small fish
Habitat
Little Blue Penguin
Rocky coastlines, Burrows, Coastal forests
Snares Penguin
Sub-Antarctic islands, Rocky shores, Olearia forest
Regions
Little Blue Penguin
New Zealand, Southern Australia
Snares Penguin
Snares Islands (New Zealand)
Genus
Little Blue Penguin
Eudyptula
Snares Penguin
Eudyptes
Key Differences
Not a second table — the reasons the numbers diverge.
Survival problem
Little Blue Penguin: Little Blues have to breed close enough to shore for short feeding trips while still keeping nests safe from dogs, cats, traffic, lights, and rough weather. 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 Snares Penguin is substantially taller on average — up to 61 cm and 4 kg against the Little Blue Penguin's 33 cm and 1.5 kg. That gap changes dive physics, fasting capacity, and how each bird spends energy on land and at sea.
Habitat logic
Little Blue Penguins use rocky coastlines, burrows, and coastal forests; 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
Little Blue Penguins live in New Zealand and Southern Australia; 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
Little Blue Penguins eat small fish, squid, and crustaceans; Snares Penguins eat krill, squid, and small fish. Distinct items on each list (crustaceans versus krill) hint at different dive depths and foraging schedules. Both still lean on small fish and squid, so ocean productivity swings can hit them together.
Dive depth
The Snares Penguin reaches 120 m — around 1.7 times the Little Blue Penguin's 72 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 9.4 times as many Little Blue Penguins as Snares Penguins — ~469,760 individuals against ~25,000 breeding pairs. Rarity is not the same as risk, but it sets how little has to go wrong before a decline becomes irreversible.
Conservation pressure
The Snares Penguin carries the sharper label (Vulnerable, population ~25,000 breeding pairs) against the Little Blue Penguin's Least Concern (~469,760 individuals). Listed as Vulnerable because their entire breeding population is confined to a single small island group. The lower-risk bird is not “safe”; it simply has a wider margin before the same kinds of ocean or land failure become terminal.
Lifespan window
Little Blue Penguins are built for a longer adult career (6–25 years) than Snares Penguins (15–20 years). Longer lives amplify the cost of a bad breeding decade; shorter lives put more pressure on every successful chick year.
Key Similarities
Same family, different genera
Both are penguins in Spheniscidae, yet they sit in different genera (Eudyptula 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 small fish and squid. Shared prey is a coupling: a krill or forage-fish crash can stress both populations even when colonies sit far apart.
Why both still feel like penguins
They are the smallest penguins on Earth, and many colonies only really reveal themselves after dark when the birds come ashore in blue-gray little packs. Snares Penguins can form dense, loud colonies under vegetation on a place many people will never see, which makes them both well protected and strangely vulnerable. Underneath those quirks sit the same flightless, flipper-driven design that makes every living penguin a swimming specialist rather than an aerial one.
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: Snares Penguin versus Little Blue Penguin, Eudyptula versus Eudyptes, Least Concern versus Vulnerable. Use the profiles for depth — this page is the decision tree for which difference matters first.
About Each Species
Little Blue Penguin
The Little Blue Penguin survives by being small, coastal, and secretive. It is a night commuter living in a world that humans have made dangerously easy for predators.
The world's smallest penguin species at just 30–33 cm tall and around 1 kg, Little Blue Penguins are unique for their slate-blue plumage and nocturnal habits on land, returning to their burrows only after dark.
Full Little Blue 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 Little Blue Penguin or the Snares Penguin?
The Snares Penguin is larger — up to 61 cm and 4 kg — while the Little Blue Penguin reaches about 33 cm and 1.5 kg.
Which is more endangered, the Little Blue Penguin or the Snares Penguin?
The Snares Penguin sits higher on the IUCN ladder (Vulnerable, ~25,000 breeding pairs) than the Little Blue Penguin (Least Concern, ~469,760 individuals). Listed as Vulnerable because their entire breeding population is confined to a single small island group.
Do Little Blue Penguins and Snares Penguins live in the same place?
No meaningful range overlap. Little Blue Penguins: New Zealand and Southern Australia. Snares Penguins: Snares Islands (New Zealand).
What do Little Blue Penguins and Snares Penguins eat?
Both take small fish and squid. Full lists: small fish, squid, and crustaceans for the Little Blue Penguin; krill, squid, and small fish for the Snares Penguin.
What is the biggest survival difference between Little Blue Penguins and Snares Penguins?
Little Blue Penguin: Little Blues have to breed close enough to shore for short feeding trips while still keeping nests safe from dogs, cats, traffic, lights, and rough weather. 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 Little Blue Penguins and Snares Penguins closely related?
They are both penguins (Spheniscidae) but sit in different genera: Eudyptula (Little Blue Penguin) and Eudyptes (Snares Penguin). That is family-level relatedness, not a close sister-species pair.
Which lives longer, the Little Blue Penguin or the Snares Penguin?
The Little Blue Penguin generally has the longer window (6–25 years) versus 15–20 years for the Snares Penguin.