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Presidio of San FranciscoSerpentinite rock on coastal bluff
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Presidio of San Francisco
Black-crowned Night-Heron
(Nycticorax nycticorax)
 
blackcrown night heron
Will Elder, NPS
A 1st-year Black-crowned Night-Heron hunts at Crissy Marsh.
 

Natural History: This bird sustains itself by feeding on small fish and other small vertebrates as well as invertebrates caught by stalking. It usually feeds at dawn, dusk and at night. This species is found around both freshwater and brackish habitats. It roosts and nests in colonies in trees or shrubs near water.

General Distribution: In the Presidio, this species can be found near freshwater, saltwater bays, and tidal areas, particularly frequenting Crissy Marsh.

Frequency: This bird is moderately common at the Presidio throughout the year.

Identifying Characteristics: This is stocky heron with a short neck. Adults have a black crown and back and creamy color neck. Juveniles are a speckled brown and lack black markings.

Presidio Birds main page

Jonathan Letterman  

Did You Know?
Major Jonathan Letterman--after whom the hospital at the Presidio was renamed in 1911--was the medical director of the Army of the Potomac. A founding father of military medicine, Letterman organized forward first-aid stations, mobile field hospitals, and ambulance services during the Civil War.

Last Updated: November 16, 2007 at 17:22 EST