Brown pelicans display beauty during trying times

About 100 California Brown Pelicans made an unusual appearance on the old wooden dock on the south side of Alameda Point near the U.S.S. Hornet on December 23. The visit provided a rare close-up view of this colorful and iconic bird, but also a reminder of their struggle to survive as a species. Only one of the pelicans could be identified as a one- or two-year-old.

Brown Pelicans resting on old recreational boating dock on south side of Alameda Point in December.
Brown Pelicans resting on old recreational boating dock on south side of Alameda Point in December.

During the past four years, the breeding rate for California Brown Pelicans has been dismal. This recent trend has been directly attributable to the dwindling supply of sardines along the California coast, according to a Brown Pelican status report issued in October by the Washington State Department of Fish and Wildlife. The sardine population has dropped so low that in April of 2015, the agency responsible for managing Pacific Coast fisheries banned commercial fishing of sardines until the end of June 2016.

In May, the U.S. Fish and Wildlife Service urged the same agency to consider additional management measures to stave off a decline in northern anchovy, another important food source for pelicans and other marine life.

California brown pelicans resting on Alameda Point dock

Brown Pelicans were removed from the federal endangered species list in 2009 with great fanfare after recovering from the devastating effects of the agricultural pesticide DDT on their eggs. But they no sooner recovered from chemical contamination than they fell victim to a plunge in food supply.

“Although most essential nesting and roosting habitat throughout the subspecies’ range is protected, the California Brown Pelican has experienced unusual mortality events and a multi-year decline in breeding success since delisting, both of which appear to be due to the lack of adequate forage,” wrote the U.S. Fish and Wildlife Service to the Pacific Fishery Management Council on May 14, 2015.

Brown pelicans roosting on the dock

About 10 percent of California Brown Pelicans nest on two islands in Channel Islands National Park off the coast of Southern California. The remainder nest and rear their young off the western coast of Mexico.

The University of California at Davis and the Mexican national conservation agency conducted a study of the 2014 nesting season off the coast of Mexico. The U.C. Davis news summary of the study results stated, “The scientists found that this year, areas that typically host hundreds or thousands of nesting pairs held only a few hundred at most, and in some cases zero nesting pairs.” Co-author of the study, U.C. Davis wildlife biologist Dan Anderson, is quoted in the story saying, “That’s what we call a failure, a bust. The bottom dropped out.” Anderson has been monitoring Brown Pelicans for 46 years.

Brown Pelicans soaking up the sun during a rare visit to an old dock on Alameda Point's south shore.
Brown Pelicans soaking up the sun during a rare visit to an old dock on Alameda Point’s south shore.

Breeding normally begins in January. Whether the pelicans currently at Alameda Point will make the journey south is yet to be seen.

Breakwater Island along the south side of the Alameda Point Channel serves as the most popular resting site for Brown Pelicans on San Francisco Bay during the warmer months.

Immature (1 or 2 years old) Brown Pelican with all-brown head and neck, the only one spotted among about 100 pelicans on the dock on December 23, 2015.
Immature (1 or 2 years old) Brown Pelican with all-brown head and neck, the only one spotted among about 100 pelicans on the dock on December 23, 2015.

Immature Brown Pelicans are distinguishable by being entirely brown, except for their whitish underbelly.  By their third year, the neck becomes white and the head yellow.  During breeding season, the neck of adults becomes dark chestnut and the pouch under their bill becomes red. 

Reprinted on Golden Gate Birder, Golden Gate Audubon Society’s blog.

Featured on Bay Nature’s Nature News.

Further reading:

“Periodic Status Review for the Brown Pelican,” October 2015, State of Washington Department of Fish and Wildlife.

“Failure to launch:  California brown pelicans’ breeding rate dismal,” June 2, 2014, UC Davis News and Information.

“Letter from U.S. Fish and Wildlife Service to Pacific Fishery Management Council,” May 14, 2015.

Additional photos and video from December 23, 2015, Alameda Point:

California brown pelicans in breeding plumage at Alameda Point

California brown pelicans huddled on the dock

California brown pelican at Alameda Point

California brown pelicans in breeding plumage, Dec. 23, 2015, Alameda Point

Brown pelican stretching at Alameda Point

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 “Brown pelicans display beauty during trying times”

  1. Great story on the uncertain future of the Brown Pelicans.

    Any references available on why the sardine population has declined? And the anchovie population? Were our fish catches unsustainable or did changes in ocean conditions suddenly make once sustainable fish catches unsustainable?

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    1. The Washington State status report on Brown Pelicans listed above explores the subject in detail. The short answer is that sardine populations have undergone wide swings in their numbers over hundreds of years. One period – 1947 – is cited when both overfishing and the sardines’ own reproductive abilities acted as a “double hit.” The report says, “The 1947 collapse of the sardine stock occurred during a time of very heavy fishing pressure and several successive years of low reproductive success (Bargmann 1998).”

      The report also said, among other things, “Sardines went from being nonexistent to one of the dominant pelagic species in the northern California Current in the span of slightly more than a decade (Emmett et al.2005). In British Columbia, sardines re-appeared in 1992, after an absence of 45 years (McFarlane and Beamish 2001).”

      So, there does not seem to be a clear correlation between sardine numbers and commercial fishing. What is clear by the ruling of the fisheries management council is that continued fishing of the sardine stock during times of meager numbers could be devastating. In other words, commercial fishing WOULD be potentially culpable for marine life health if not halted, at least for the time being. The fisheries council, it should be noted, did not institute the one-year fishing ban because they were concerned about pelicans. They did it to preserve their industry.

      The available evidence suggests that both ocean fish and Brown Pelicans are resilient. What is unknown is how climate change – ocean temperatures, currents – will factor into their future and whether the abilities to recover are being short-circuited.

      Like

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