Cormorant vs Grebe for Kids
Great Cormorants and Great Crested Grebes both disappear underwater after fish, yet they are not close relatives and use different equipment. The cormorant is much larger, dark, long-tailed, and fully web-footed, with a hooked bill. The grebe is lighter, white-necked, sharply billed, and powered by toes with separate swimming lobes. Its ornate crest and water dance make it unmistakable in breeding plumage.
About Great Cormorant
- Type Bird
- Diet Carnivore and piscivore; mainly fish, with some crustaceans
- Group Cormorant; family Phalacrocoracidae
- Known for Black plumage, a hooked bill, deep fish-chasing dives, low swimming, colonies, and spread-wing drying
- Special skill Reduces buoyancy with wettable feathers, propels itself underwater with webbed feet, and steers with its tail
About Great Crested Grebe
- Type Bird
- Diet Carnivore; fish and aquatic invertebrates
- Group Grebe; family Podicipedidae
- Known for A double crest, chestnut-black head ruff, dance-like courtship, lobed toes, floating nests, and back-riding chicks
- Special skill Turns and dives with legs set far back and lobed toes while carrying striped chicks on an adult’s back
Quick Answer
Quick answer: The Great Cormorant is the giant: 84 to 90 centimeters long and 2.6 to 3.7 kilograms in Animal Diversity Web records. A Great Crested Grebe averages about 993 grams in BTO records. Cormorants chase fish with fully webbed feet and often dry spread wings. Grebes have lobed toes, legs far back, floating nests, dancing courtship, and chicks that may ride on a parent’s back.
Great Cormorant vs Great Crested Grebe: Quick Comparison
| Feature | Great Cormorant | Great Crested Grebe |
|---|---|---|
| Scientific identity | Phalacrocorax carbo | Podiceps cristatus |
| Bird family | Phalacrocoracidae | Podicipedidae |
| Size clue | 84-90 cm long; 2.6-3.7 kg | About 993 g average in BTO records |
| Adult look | Mostly dark with long neck, long tail, yellow face patch, and hooked bill | White front, dark back, slender neck, pointed bill, double crest, and chestnut-black ruff in breeding plumage |
| Swimming feet | Four toes joined by webbing | Separate toes edged with broad lobes |
| Underwater power | Mostly large webbed feet; tail steers | Far-back legs and lobed toes |
| Feathers after diving | Wettable plumage; often spreads wings to dry | Dense waterbird plumage; often preens and may swallow feathers |
| Nest | Stick and seaweed nest on ground, cliff, or tree in a colony | Floating mound of wet plants anchored near reeds |
| Young | Helpless nest chicks fed by both parents | Striped, mobile chicks often carried on a parent’s back |
| Courtship clue | Wing waving, gargling, and neck displays | Mirrored head shaking and a famous weed-carrying water dance |
How Are Cormorants and Grebes Alike?
- Both are waterbirds that dive beneath the surface to catch fish.
- Both use powerful feet for most underwater propulsion.
- Both have long necks and pointed or hooked bills suited to slippery prey.
- Both live on fresh water and sheltered coastal waters during at least part of the year.
- Both parents share incubation and care of the young.
How Are Cormorants and Grebes Different?
- The Great Cormorant is several times heavier than the Great Crested Grebe.
- Cormorants have fully webbed feet; grebes have separate toes with broad swimming lobes.
- A cormorant is mainly dark with a hooked bill; a breeding grebe has a white neck, sharp bill, double crest, and chestnut-black ruff.
- Cormorants build open stick nests in colonies; grebes build floating plant nests hidden near water vegetation.
- Cormorant chicks remain in a nest; newly hatched grebe chicks can climb onto a parent’s back.
Cormorant vs Grebe Showdown
Adaptation showdown: Great Cormorant wins size because its 2.6-3.7-kilogram mass far exceeds the grebe’s roughly 993-gram BTO average. Speed is a Tie because sources do not provide a fair matched underwater or flight-speed test. Great Cormorant wins strength because its larger body and hooked bill handle powerful fish. Great Crested Grebe wins stealth because it can sink low and slip underwater near reed cover with little splash. Great Cormorant wins social behavior because it forms dense nesting colonies and large mixed groups. Swimming is a Tie because the cormorant excels at forceful foot-powered pursuit while the grebe’s far-back legs and lobed toes provide agile turns. Great Crested Grebe wins weirdest for its mirrored courtship dance, floating nest, feather swallowing, and back-riding striped chicks.
Fun Great Cormorant vs Great Crested Grebe Facts
Feathers Made to Get Wet
Great Cormorant feathers are wettable, which reduces buoyancy and helps a diving bird stay underwater. Afterward, the bird often holds its wings open to dry.
Toes With Swimming Paddles
A Great Crested Grebe does not have one broad web across its front toes. Instead, each toe has flat lobes that push against water like folding paddles.
A Dance on the Lake
Great Crested Grebe pairs mirror head shakes and can rise chest to chest while presenting water plants. The carefully matched movements help partners form or renew a bond.
Built Like a Submarine Hunter
A Great Cormorant tucks its wings, drives with its webbed feet, and steers with its tail while chasing fish underwater. Recorded mean dives can last roughly 21 to 51 seconds.
Chicks Ride Above the Waves
Striped grebe chicks may scramble onto the back of a swimming parent, sheltered beneath raised wing feathers. The other adult can bring food to the passenger.
Cormorant vs Grebe Quiz
- Which bird is much heavier? Answer: The Great Cormorant.
- Which bird has lobed toes? Answer: The Great Crested Grebe.
- Why does a cormorant spread its wings? Answer: To help dry its wettable feathers after swimming or diving.
- What is special about a grebe nest? Answer: It is a floating mound of water plants, usually anchored near vegetation.
- Which chicks may ride on a parent’s back? Answer: Great Crested Grebe chicks.
Great Cormorant vs Great Crested Grebe FAQ
Is a cormorant a grebe?
No. They belong to different bird families and even different orders.
Which bird is bigger?
The Great Cormorant is much larger and several times heavier.
Can both birds dive?
Yes. Both are excellent foot-powered divers that catch fish underwater.
Do grebes have webbed feet?
Not broad duck-like webs. Each grebe toe has its own flexible swimming lobe.
Why do cormorants look as if they are drying laundry?
Their spread-wing posture helps wettable feathers dry after time in the water.
Animal Words to Know
- Buoyancy: The upward force that helps an object or animal float in water.
- Piscivore: An animal that mainly eats fish.
- Lobed toe: A toe edged with a broad flexible flap that pushes water during swimming.
- Courtship display: Special movements or sounds animals use when choosing and bonding with mates.
- Floating nest: A nest built from water plants that rests on the surface and is usually anchored nearby.
Engineer Two Diving Feet
Engineer Two Diving Feet
Draw exactly one adult Great Cormorant and exactly one adult Great Crested Grebe at honest relative scale beside clear diagrams of their feet. Use paper strips to model a cormorant’s full webbing and separate paper flaps to model a grebe’s lobed toes. Push both models gently through a tray of water and record how they move. Keep real birds wild and never have people handling them.
Meet Each Animal
Want the full fact file? Here are quick highlights from each animal’s own facts page.
Great Cormorant Fact Highlight
From the full animal facts page
Great Crested Grebe Fact Highlight
From the full animal facts page
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