2008 42c Gr. Lakes Dunes Common Merganse
# 4352e FDC - 2008 42c Gr. Lakes Dunes Common Merganse
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U.S. #4352e
Great Lakes Dunes
Common Megansers
Nature of America Series
Issue Date: October 2, 2008
City: Empire, MI
Common mergansers are the largest of the three merganser species in North America. They have serrated bills that they use to catch slippery fish, which has earned them the nickname of “sawbills.”
These mergansers often float along bodies of water in search of food. Once they spot a fish, the mergansers dive under water, swimming until they catch their prey. Excellent swimmers, these birds will dive into rushing waters and under ice through water that is almost entirely frozen over in search of food. Mergansers are such good hunters that other birds, including gulls and eagles, often wait for them to surface to steal their catch. They usually attempt to swallow their fish whole, causing them to wait for the fish’s head to digest before they can swallow the rest of its body.
If mergansers are disturbed while hunting, they will fly away. Because these birds’ wings are small relative to their body size, they usually skitter along the surface of the water for a brief period before taking flight. Although they may take a while to get in to the air, once they are in flight, common mergansers are exceptionally fast flyers. Male mergansers’ courtship rituals include chasing each other on the water, in the air, and underwater.
U.S. #4352e
Great Lakes Dunes
Common Megansers
Nature of America Series
Issue Date: October 2, 2008
City: Empire, MI
Common mergansers are the largest of the three merganser species in North America. They have serrated bills that they use to catch slippery fish, which has earned them the nickname of “sawbills.”
These mergansers often float along bodies of water in search of food. Once they spot a fish, the mergansers dive under water, swimming until they catch their prey. Excellent swimmers, these birds will dive into rushing waters and under ice through water that is almost entirely frozen over in search of food. Mergansers are such good hunters that other birds, including gulls and eagles, often wait for them to surface to steal their catch. They usually attempt to swallow their fish whole, causing them to wait for the fish’s head to digest before they can swallow the rest of its body.
If mergansers are disturbed while hunting, they will fly away. Because these birds’ wings are small relative to their body size, they usually skitter along the surface of the water for a brief period before taking flight. Although they may take a while to get in to the air, once they are in flight, common mergansers are exceptionally fast flyers. Male mergansers’ courtship rituals include chasing each other on the water, in the air, and underwater.