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Presidio of San Francisco View of Alcatraz from near Golden Gate Club on the Main Post
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Presidio of San Francisco
Mallard
(Anas platyrhynchos)
 
Mallard ducks
Will Elder, NPS
Male Mallards swim on Mountain Lake.
 

Natural History: This aquatic species feeds mostly on plant material. It rarely dives and tends to hide in dense, emergent vegetation. It is a monogamous species that tends to nest in hollows among reeds or grass from March to July.

General Distribution: The Mallard is found in ponds, streams, bay areas, marshes, and tidal rocky areas, where they breed.

Frequency: This animal is found abundantly during the winter, spring, and summer months.

Identifying Characteristics: This species has different identifying features between the males and females. The males show a glossy, green head and narrow white collar. They have a yellowish bill and orange feet. The females can be noted by a mottled brown with whitish tail. The females tend to emit loud quacks.

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Ferdinand Foch, Marshal of France

Did You Know?
French Marshal Ferdinand Foch, supreme commander of the allied forces during World War I, visited Crissy Field in 1921 and declared it "The last word in airfields."

Last Updated: February 23, 2008 at 16:08 MST