Mute Swan vs Red-breasted Merganser
How does the Mute 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.


Side-by-side comparison
- Scientific name
- Cygnus olor
- Mergus serrator
- Classification
- Bird
- Bird
- Family
- Anatidae
- Anatidae
- Habitat
- Freshwater lakes, ponds, rivers, and marshes
- Freshwater and coastal wetlands
- Diet
- Herbivore
- Carnivore
- Conservation status
- Least Concern
- Least Concern
- Lifespan
- 10-20 years in the wild
- 8-13 years
- Weight
- 9-14 kg
- 800-1350 g
Mute Swan vs Red-breasted Merganser: who would win?

Mute Swan
9-14 kg

Red-breasted Merganser
800-1350 g
Mute Swan wins high confidence
Mute Swan is substantially heavier (9-14 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 lakes, ponds, rivers, and marshes vs Freshwater and coastal wetlands.
- Diet: herbivore vs carnivore.
- Weight: 9-14 kg vs 800-1350 g.
Mute Swan vs Red-breasted Merganser: FAQ
Who would win in a fight, a Mute Swan or a Red-breasted Merganser?
Mute Swan wins. Mute Swan is substantially heavier (9-14 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 Mute Swan and a Red-breasted Merganser?
Mute Swan and Red-breasted Merganser differ in several ways — habitat: freshwater lakes, ponds, rivers, and marshes vs freshwater and coastal wetlands. diet: herbivore vs carnivore. weight: 9-14 kg vs 800-1350 g.
Do Mute Swan and Red-breasted Merganser live in the same habitat?
No — Mute Swan lives in freshwater lakes, ponds, rivers, and marshes, while Red-breasted Merganser is found in freshwater and coastal wetlands.
What do Mute Swan and Red-breasted Merganser eat?
Mute Swan has a herbivore diet, while Red-breasted Merganser has a carnivore diet.
Which is more endangered, the Mute Swan or the Red-breasted Merganser?
Mute Swan is listed as Least Concern, while Red-breasted Merganser is listed as Least Concern.
How big are Mute Swan and Red-breasted Merganser?
Mute Swan weighs around 9-14 kg, while Red-breasted Merganser weighs around 800-1350 g.

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Mute Swan

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Red-breasted Merganser





