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Black-necked Swan vs Red-breasted Merganser

How does the Black-necked Swan compare to the Red-breasted Merganser? They are both members of the Anatidae family. Below we put their classification, habitat, diet, size, and conservation status side by side — and settle who would win in a fight.

Black-necked Swan
Red-breasted Merganser

Side-by-side comparison

Black-necked Swan
Red-breasted Merganser
Scientific name
Cygnus melancoryphus
Mergus serrator
Classification
Bird
Bird
Family
Anatidae
Anatidae
Habitat
Freshwater wetlands
Freshwater and coastal wetlands
Diet
Herbivore
Carnivore
Conservation status
Least Concern
Least Concern
Lifespan
10-20 years
8-13 years
Weight
3.5–6.7 kg
800-1350 g

Black-necked Swan vs Red-breasted Merganser: who would win?

Black-necked Swan

Black-necked Swan

3.5–6.7 kg

VS
Red-breasted Merganser

Red-breasted Merganser

800-1350 g

Black-necked Swan wins high confidence

Black-necked Swan is substantially heavier (3.5–6.7 kg vs 800-1350 g). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.

Similarities

  • Both are birds.
  • Both belong to the Anatidae family.
  • Both are listed as Least Concern.

Differences

  • Habitat: Freshwater wetlands vs Freshwater and coastal wetlands.
  • Diet: herbivore vs carnivore.
  • Weight: 3.5–6.7 kg vs 800-1350 g.

Black-necked Swan vs Red-breasted Merganser: FAQ

Who would win in a fight, a Black-necked Swan or a Red-breasted Merganser?

Black-necked Swan wins. Black-necked Swan is substantially heavier (3.5–6.7 kg vs 800-1350 g). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.

What is the difference between a Black-necked Swan and a Red-breasted Merganser?

Black-necked Swan and Red-breasted Merganser differ in several ways — habitat: freshwater wetlands vs freshwater and coastal wetlands. diet: herbivore vs carnivore. weight: 3.5–6.7 kg vs 800-1350 g.

Do Black-necked Swan and Red-breasted Merganser live in the same habitat?

No — Black-necked Swan lives in freshwater wetlands, while Red-breasted Merganser is found in freshwater and coastal wetlands.

What do Black-necked Swan and Red-breasted Merganser eat?

Black-necked Swan has a herbivore diet, while Red-breasted Merganser has a carnivore diet.

Which is more endangered, the Black-necked Swan or the Red-breasted Merganser?

Black-necked Swan is listed as Least Concern, while Red-breasted Merganser is listed as Least Concern.

How big are Black-necked Swan and Red-breasted Merganser?

Black-necked Swan weighs around 3.5–6.7 kg, while Red-breasted Merganser weighs around 800-1350 g.

Black-necked Swan

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Black-necked Swan

Red-breasted Merganser

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Red-breasted Merganser