California Brown Pelicans roosting at Alameda Point

L-shaped Breakwater Island – largest brown pelican roosting site in San Francisco Bay – with San Francisco in background. Breakwater rocks in foreground extend back to Encinal Boat Ramp.  Former Naval Air Station is located to the right.

The successful recovery effort for the once endangered California brown pelican is evident every summer through fall on Breakwater Island, an area which forms the beginning of the Alameda Point Channel leading to the ship docks and Seaplane Lagoon.  The breakwater is a wall of boulders built up from the Bay floor to reduce wave action in the harbor.

California brown pelicans were listed as an endangered species in 1970.  The pesticide DDT was identified as the cause of their decline.  It caused reproductive harm, and altered the birds’ calcium absorption, which led to thin eggshells that would break under the parents’ weight.  Use of DDT was banned in the United States 1972. 

A recovery effort was launched in the 1970s on Channel Islands National Park off the coast of Santa Barbara. The only breeding colonies of California brown pelicans in the western United States are within Channel Islands National Park on West Anacapa and Santa Barbara islands.

California brown pelican preening on Breakwater Island.

In the summer and fall, the brown pelicans can range from nesting colonies in Mexico and the Channel Islands all the way up to British Columbia.  Alameda Point’s Breakwater Island is the largest roosting site in San Francisco Bay. A safe, secure roosting area is essential for pelicans to rest, preen, dry their feathers, maintain body temperature, and socialize.

When the Naval Air Station was still active, the Navy enforced restrictions against boats landing on the Island and posted signs that warn against disturbing the birds.  Since the base closed, there has been no one to enforce regulations against disturbing the pelicans. 

California brown pelicans relaxing on Breakwater Island on sunny fall day. Their mouth sack is the largest of any bird and is used to scoop fish when they plunge into the water.

The California Brown Pelican was removed from the Endangered Species List in 2009 after an almost 40-year recovery.  There is currently no plan to look out for the welfare of these magnificent birds after the base is transferred out of Navy ownership.  One way to ensure adequate protection and provide public education and appreciation of this unique ecological asset is to have it be part of an “Alameda Point Wildlife Conservation Area.” The East Bay Regional Park District would be an excellent agency to manage it; they already have a marine conservation area at nearby Crab Cove.

Young California brown pelican with leg band.

Young brown pelican
Old-timer. Brown pelicans can live to 30 years.

Close-up photos of Breakwater Island pelicans were taken in October 2012 from a kayak.

View more Breakwater Island pelican photos in the Flickr photo set.

More information is available on the Channel Islands National Park website.

This story is reprinted on the Golden Gate Audubon Society’s blog Golden Gate Birder.

Update – October 23, 2012

The brown pelican pictured above with a leg band reading “K69” was brought to the International Bird Rescue clinic in Cordelia near Fairfield, CA on July 9, 2012 in a thin and weak condition.  It is less than a year old.  After a one-month rehab, it was released at the Elkhorn Slough Estuarine Reserve near Watsonville on August 10.  A blue band on a pelican leg means it was given a helping hand at one of the two clinics operated by International Bird Rescue – located in the San Francisco Bay Area and Los Angeles. Some of their released pelicans have been spotted in Oregon and Washington.  If you see a pelican with a blue leg band, they’d like to hear about it.

Author: richard94501

My blog is Alameda Point Environmental Report covering environmental issues from wildlife to cleanup at the former Navy base in Alameda now called Alameda Point. Articles on my blog are frequently printed in the Alameda Sun newspaper. I also host a Twitter site and a Flickr photo site. I hope you find my stories and photos of interest. Richard Bangert Alameda, California

2 thoughts on “California Brown Pelicans roosting at Alameda Point”

  1. Richard – Great pictures. The little beach by the Encinal Boat Ramp, that lagoon and the whole jetty area are fantastic. What a great future park (could even include Bay-side camping by re-habbing the old USN campground).

    Like

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