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Presidio of San FranciscoCrissy Field Pilots Row
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Presidio of San Francisco
Tree Swallow
(Tachycineta bicolor)
 
Tree Swallow
© Alan Hopkins 2001
A Tree Swallow rests on a snag near Mountain Lake.
 

Natural History: The Tree Swallow feeds primarily on insects caught in flight. It takes cover in woodlands near areas of water. It nests in cavities in snags, trees, and cliffs, breeding from mid-April to mid-August.

General Distribution: In the Presidio, this bird is found in forests of eucalyptus, Monterey Pine, and Redwood. This species breeds within the Presidio.

Frequency: This species is common in the Presidio in the summer, spring, and fall; however, it is rare during the winter months.

Identifying Characteristics: This species has a steely blue or green-black upper top and white below. It can be seen gliding in circles.

Presidio Birds main page
U.S. Army major rank insignia  

Did You Know?
In 1915, a tragic fire at the Presidio claimed the lives of General Pershing’s wife and his three daughters. Pershing's son, Francis Warren, survived the blaze and chose to enlist in the army as a private during World War II. By the end of the war he had achieved the rank of major.

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Last Updated: November 17, 2007 at 13:27 EST