Mallard/Eastern Spot-billed Duck Complex
Mallard/Eastern Spot-billed Duck Complex
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This group includes ducks with mixed traits from Mallards and Eastern Spot-billed Ducks, reflecting widespread hybridization where their distributions overlap in East Asia. The appearance can be highly variable and confusing.
Where to spot
Wetlands and aquatic environments throughout East Asia, where both species are present.
How to spot
Look for ducks that don't quite fit either parent's description, perhaps with a head pattern or speculum color that suggests Mallard influence on a Spot-billed Duck body type, or vice-versa. Careful observation of bill markings is also crucial.
When to spot
Year-round, as these species are largely resident.
Where to spot
Wetlands and aquatic environments throughout East Asia, where both species are present.
How to spot
Look for ducks that don't quite fit either parent's description, perhaps with a head pattern or speculum color that suggests Mallard influence on a Spot-billed Duck body type, or vice-versa. Careful observation of bill markings is also crucial.
When to spot
Year-round, as these species are largely resident.
Hybridization can make it challenging to assess the precise population status and conservation needs of pure Eastern Spot-billed Ducks, as mixed individuals are often counted together.
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