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Lesser Scaup vs Steller's Eider

Aythya affinis contro Polysticta stelleri

Fai un quiz con Lesser Scaup e Steller's Eider

Lesser Scaup (Aythya affinis) Lesser Scaup
Steller's Eider (Polysticta stelleri) Steller's Eider

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In breve

Lesser Scaup e Steller's Eider possono essere distinti dalla loro struttura e piumaggio. Il Lesser Scaup ha una forma di anatra più tipica con una testa arrotondata e un becco blu, mentre lo Steller's Eider è più compatto con un distintivo motivo nero e bianco nei maschi. Osservare queste caratteristiche sul campo può aiutare a differenziare le due specie.

Consigli di identificazione

Piumaggio

Male Lesser Scaup have a black head, chest, and rear with a grey body, while male Steller's Eiders have a striking black and white pattern with a chestnut breast. Female Lesser Scaup are brown with a white patch at the base of the bill, whereas female Steller's Eiders are more uniformly brown.

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Lesser Scaup and Steller's Eider can be distinguished by their structure and plumage. The Lesser Scaup has a more typical duck shape with a rounded head and a blue bill, while the Steller's Eider is more compact with a distinctive black and white pattern in males. Observing these features in the field can help differentiate the two species.

  • Look for the rounded head and blue bill of the Lesser Scaup.
  • Note the distinctive black and white pattern in male Steller's Eiders.
  • Female Lesser Scaup have a white patch at the base of the bill; female Steller's Eiders do not.

Male Lesser Scaup have a black head, chest, and rear with a grey body, while male Steller's Eiders have a striking black and white pattern with a chestnut breast. Female Lesser Scaup are brown with a white patch at the base of the bill, whereas female Steller's Eiders are more uniformly brown.

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Lesser Scaup · Steller's Eider · I miei uccelli difficili