Brown Pelican Pesticide Ban Success Story and Why This is Relevant to Gloucester Lobstermen and Our Community

California Brown Pelican taking flight El Matador Beach ©Kim Smith 2015 copyBrown Pelican Taking Flight

When I was a young girl my family lived in Southern California for several years. I recall seeing few, if any, brown pelicans at our local beaches. Due to the widespread use of DDT in agriculture, brown pelicans on both the east and west coasts, along with other species of birds, were made nearly extinct. Pelicans incubate their eggs with the skin of their feet, essentially standing on the eggs to keep them warm. DDT caused thinning of the eggshells and when the pelican parents stood on the eggshells, the shells fractured and broke.California Brown Pelican preening ©Kim Smith 2015

Preening Pelicans ~ You can tell that these two are young pelicans because their eyes, usually brown, turn blue during courtship.

During the 1960s brown pelican colonies along the Southern California coast had shrunk by more than 90 percent. For decades, a chemical plant had been discharging thousands of pounds of DDT into Los Angeles sewers. The toxic chemical was ingested by anchovies and other fish consumed by pelicans. The chemical altered the pelican’s calcium metabolism, which caused them to lay eggs with thinner shells. DDT-caused shell thinning also exterminated peregrine falcons in the east, and took a terrible toll on bald eagles and ospreys.

El Matador Beach Brown Pelican habitat ©Kim Smith 2015. JPG

Insulation: After deep diving for fish, pelicans perch on rocks and preen. Pelicans feather’s keep them warm and dry; they do not actually get wet thanks to the oil in their preening gland. The glands secrete oily waxes and fats that they work into their feathers making them wind- and weatherproof, as well as providing insulation from the cold.

As a direct result of Rachel Carson’s seminal book Silent Spring, in 1972 DDT was banned nationwide. The brown pelican has recovered ground and was delisted from the federally endangered species in 2009. Unfortunately, after DDT was banned, two years later Monsanto brought to market their glyphosate herbicide Round Up.

El Matador Beach commorants ©kim Smith 2015

 Brown Pelican Habitat ~ El Matador State Beach

While visiting Liv and Matt, we spotted pelicans everywhere and it was absolutely wonderful to see. They are magnificent birds with an extraordinary life story. Here are several links to learn more about the California brown pelican:

About Pelicans, California Brown Pelicans

El Matador  Beach Pelican ©Kim Smith 2015

Today the lobster industry faces several major threats. Not only are the lobsters stressed from warming ocean waters and a protozoan parasite, but several pesticides used in massive mosquito spraying, including methoprene, malathion, and remethrin are linked to contributing to the collapse of the lobster fishery in the waters off Connecticut and New York. Lobsters are arthropods, which places them in the same phylum classification as mosquitoes and may help explain why they are affected. Lobster landings on Long Island Sound are of particular concern as they have declined from 3.7 million pounds in 1999 to 142,000 pounds in 2011.

Bearing in mind that worse chemicals are often used after specific chemicals are banned, the Maine Lobsterman’s Association is somewhat reluctant at this point to endorse banning specific pesticides until more comprehensive testing is done.

Gloucester lobsterman follow strict conservation guidelines. It would be very interesting to learn what they consider are the reason(s) for the declining population of lobsters in fisheries further south.

El Matador Beach ©Kim Smith 2015El Matador Beach

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Silent Spring

8 thoughts on “Brown Pelican Pesticide Ban Success Story and Why This is Relevant to Gloucester Lobstermen and Our Community

    1. Thank you Kathy for your always thoughtful comments. Truly a joyful thing to see how they have recovered. Everything about them is fascinating and they added so much beauty to the already gorgeous waterfront areas that we visited


  1. Hi Kim, I hope you can help me with this. I used to lots of Gold Finch. Lately I have not seen a one. I have the feeders and the teasel seed feeders but still no G F. Not even a chickadee have come around


  2. Hi Anita,

    I’ve seen a few, but not nearly as many as in previous years. Their lower numbers have been reported up and down the east coast. Goldfinches are migratory and nomadic, following food sources. And their population numbers vary widely from year to year. I’ve heard the theory that they may be finding all the food they need in the wild, but that hardly seems plausible these past few weeks.

    One year when it was super snowy, an irruption of Pine Siskins arrived on Cape Ann. They, along with the goldfinches, were at the Nyjer seed feeder from morning until night. I would continue to keep your Nyger seed feeders filled, for any finches, grosbeaks, and traveling siskins. Goldfinches also love black oil sunflower seeds (so do squirrels). The male’s plumage shows in much quieter tones at this time of year so you may, as do I, have a few goldfinches feeding alongside your sparrows. I hope this was helpful.The male’s plumage shows in much quieter tones at this time of year; there may be a few goldfinches feeding alongside your sparrows. I hope this was helpful.

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  3. Good Morning Kim, I have plenty of sparrows and Juncos. I can hear the chickadee’s. I will keep the feeders full.
    I had to change the Gold Finch feeder to a metal one. The squirrels eat holes thru the net feeders.
    I guess every one has to eat. Lol.


    1. I can imagine that they did that–when we had a squirrel family living in our house and were desperate to get rid of them, at one point we trapped them in and they chewed through the metal wire we had put in place to keep them out!


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