A medium-sized diving duck species widely distributed across northern boreal and subarctic regions of North America and Eurasia, characterized by its distinctive rounded head and strong diving capabilities.
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Ecology & Habitat
Habitat
Freshwater and marine environments including lakes, coastal waters, large rivers, and wetland ecosystems during breeding and wintering periods; prefers cold and temperate northern latitudes with abundant aquatic invertebrate populations.
Ecological Role
Critical component of aquatic food webs; serves as prey for larger predators and helps control aquatic invertebrate populations; indicator species for wetland ecosystem health and climate change impacts.
Morphology
SKIN COATDense waterproof plumage with dark coloration; males display darker black/white patterns, females have more muted brown tones
LIMBS WINGSWebbed feet positioned posteriorly for efficient underwater propulsion; compact wings enabling rapid flight and diving maneuvers
HEAD SENSORYRounded head with small bill, dark eyes with excellent underwater vision; specialized nasal structures adapted for diving
BODY STRUCTURECompact, robust body with average length of 39-48 cm and wingspan of 75-85 cm; weight ranges between 0.7-1.2 kg
