SMEW
Mergellus albellus
DESCRIPTION
The Smew (Mergellus albellus) is a small diving duck known for its striking plumage, particularly in males, which exhibit a distinctive black and white coloration. Females are more subdued in color, featuring a brownish hue with a lighter face. Smews are agile swimmers and are often seen diving for fish and invertebrates, showcasing their adeptness in aquatic environments.
FUN FACTS
- Smews are often referred to as the 'white duck' due to their striking male plumage, which makes them a favorite among birdwatchers
- They are also known for their unique courtship displays, where males perform elaborate swimming and diving maneuvers to attract females.|Despite their small size, Smews are powerful divers, capable of reaching depths of up to 5 meters in search of food
- Their ability to hold their breath for extended periods allows them to evade predators and hunt effectively
QUICK INFO
Lifespan10-15 years in the wild
Average Weight0.5-1 kg
Average Length35-45 cm
Diet TypePiscivore
Social Structurepair, often seen in small groups during migration
Activity PatternDiurnal
Breeding SeasonSpring (April-June)
- Habitat
- Smews inhabit freshwater lakes, rivers, and marshes, particularly during the breeding season. They prefer areas with abundant aquatic vegetation and open water for foraging.
- Biomes
- Freshwater, Wetlands
- Native Range
- Smews breed in northern Europe and parts of Asia, migrating southward during winter to more temperate regions.
- Continent
- Europe, Asia
- Countries
- Sweden, Finland, Russia, Poland, Germany
- Diet
- Smews primarily feed on fish, crustaceans, and aquatic invertebrates. They are skilled divers, using their agility to catch prey underwater.
- Diet Type
- Piscivore
- Favorite Food
- small fish, crustaceans
- Social Structure
- pair, often seen in small groups during migration
- Activity Pattern
- Diurnal
- Group Size
- 2-10
- Territorial
- 0
VU
0.5-1 kg
Weight
35-45 cm
Length
- Coloration
- Males are predominantly white with black markings, while females are brown with a lighter face.
- Sexual Dimorphism
- Males and females have distinctly different plumage.
- Lifespan
- 10-15 years in the wild
- Offspring per Birth
- 5-10
- Sexual Maturity
- 1 year
- Breeding Season
- Spring (April-June)
LC
Least Concern
IUCN Red List Status
- Population Status
- The Smew population is currently stable, though it faces habitat loss in some areas.
- Wild Population Estimate
- 50,000-100,000
- Population Trend
- Stable
- Endangered
- 0
- Threats
- Main threats include habitat destruction due to wetland drainage and pollution. Climate change also poses a risk by altering their migratory patterns and breeding habitats.
- Predators
- Foxes, large birds of prey, and humans can pose threats to Smews, particularly during the nesting season.
- Defense Mechanisms
- Smews rely on their swimming ability and diving skills to evade predators.
- Compatible Animals
- other waterfowl, such as ducks and geese
- Found in Zoos
- Uncommon