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Turkey vultures indicate rodenticide prevalence near Los Angeles, California, despite state-wide bans

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Turkey vultures indicate rodenticide prevalence near Los Angeles, California, despite state-wide bans


Turkey Vultures are obligate scavengers that feed upon the carcasses of a wide diversity of species. Credit: Miguel D. Saggese

Turkey Vultures (Cathartes aura) in southern California are still exposed to anticoagulant rodenticides (ARs) even though legislation was passed to drastically reduce the presence of these poisons across the state.

This is according to the short communication “Turkey Vultures (Cathartes aura) from Southern California are Exposed to Anticoagulant Rodenticides Despite Recent Bans,” recently published in the Journal of Raptor Research.

The harmful nature of these rodenticides is what led to their ban in California. If they persist, this could spell trouble for additional non-target wildlife species, including those with an endangered status like the Burrowing Owl (Athene cunicularia).

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Anticoagulant rodenticides cause system failure in animals by interfering with the synthesis of vitamin K-dependent coagulation factors in the liver. This is true for rats as well as raptors. Of the non-target wildlife species that encounter ARs, raptors are disproportionately harmed because toxins accumulate as they move up the food web, reaching their highest levels in top predators.

In southern California there are three especially vulnerable raptor species for which this is of immediate concern: the Burrowing Owl (Athene cunicularia), White-tailed Kite (Elanus leucurus), and the well-known scavenging California Condor (Gymnogyps californianus), the latter of which already faces constant health risk from residual lead shot fragments inside carcasses on the landscape.

Turkey Vultures possess a suite of characteristics that make them uniquely representative of poison accumulation in their environments. They are more widely distributed than many of their raptor cousins, including the California Condor. They also cruise over large swaths of land encompassing many different habitats and consume a wide variety of prey items. These qualities make them important sentinels in the world of raptor toxicology. The field focused on identifying primary toxicants threatening raptor populations.

  • Turkey vultures indicate rodenticide prevalence near Los Angeles, California, despite state-wide bans
    Wing-tagged Turkey Vultures are easily identified from a distance. Credit: Miguel D. Saggese
  • Turkey vultures indicate rodenticide prevalence near Los Angeles, California, despite state-wide bans
    Burrowing Owl (Athene cunicularia) population are regarded as ecologically extirpated in Southern California. Credit: Pete Bloom

To investigate the prevalence of vulture exposure to eight different types of rodenticides, a team of researchers led by Drs. Peter Bloom, Miguel D. Saggese, and Andrea Bonisoli-Alquati trapped 27 Turkey Vultures in southern California near Anaheim between 2016 and 2021. The birds were fitted with wing-tags and their blood was sampled. All birds were subsequently released back into the wild.

Each was tested for first-generation ARs and second-generation ARs, the latter of which is thought to be more toxic than the former due to its higher strength and slower metabolic breakdown. The results showed that 11% of the vultures tested showed evidence of AR exposure. Although 27 birds is a small sample size, these findings suggest that if vultures are being exposed, other raptors probably are too.

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“The presence of rodenticides in the blood of a few individuals is just the tip of the iceberg and demonstrates that these compounds are still out there. Even a small percentage of exposed wildlife should be considered a loss,” says Saggese, a faculty member at the College of Veterinary Medicine at Western University of Health Sciences.

The researchers recommend future studies focused on comparative analysis of both liver and blood samples from Turkey Vultures because liver, while difficult to collect, provides a more accurate and timely snapshot of AR exposure. Rehabilitation centers care for many birds that eventually succumb to their afflictions, providing a potential source for ground truthing this methodology.

Furthermore, the team emphasizes the importance of continuing to monitor AR exposure in Californian Turkey Vultures and keeping an eye on the adherence of pest control companies to the active legislature regarding rodenticide use.

More information:
Miguel D. Saggese et al, Turkey Vultures (Cathartes aura) from Southern California are Exposed to Anticoagulant Rodenticides Despite Recent Bans, Journal of Raptor Research (2024). DOI: 10.3356/jrr245

Provided by
Raptor Research Foundation

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Citation:
Turkey vultures indicate rodenticide prevalence near Los Angeles, California, despite state-wide bans (2024, December 3)
retrieved 3 December 2024
from https://phys.org/news/2024-12-turkey-vultures-rodenticide-prevalence-los.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

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California bill to bar police from taking second job with ICE advances in state Assembly

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California bill to bar police from taking second job with ICE advances in state Assembly


Wednesday, March 4, 2026 4:43AM

CA bill to keep police from moonlighting with ICE advances

SACRAMENTO, Calif. (KABC) — A bill that would prevent police officers from moonlighting with federal immigration enforcement agencies, such as U.S. Immigration and Customs Enforcement, is advancing through the California State Assembly.

AB 1537 passed the State Assembly’s committee on public safety on Tuesday.

The bill also requires that officers report any offers for secondary employment related to immigration enforcement to their place of work.

Those failing to comply could face decertification as a peace officer in California.

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The bill was introduced by Assemblymember Isaac Bryan, whose district includes Mar Vista, Ladera Heights, Mid-Wilshire and parts of South Los Angeles.

Copyright © 2026 KABC Television, LLC. All rights reserved.



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Can’t win in primary election? Drop out, California Democrats say

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Can’t win in primary election? Drop out, California Democrats say


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California Democrats running for governor, your party has a message for you. Think carefully about your candidacy and campaign ahead of the swiftly approaching filing deadline.

California Democratic Party Chair Rusty Hicks urged candidates looking to assume the state’s highest office to “honestly assess the viability of their candidacy and campaign” as March 6, the final day to declare candidacy, nears. Hicks said that concerns about the crowded field of Democrat candidates “persist” in an open letter on Tuesday, March 3.

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It comes as five leading candidates, several of which are Democrats — Katie Porter, Eric Swalwell, and Tom Steyer — are in a “virtual tie” per a recent poll, the Desert Sun reported, which is part of the USA TODAY Network.

Two Republican candidates pushing out California democrats in the gubernatorial bid may be “implausible,” but “it is not impossible,” Hicks said of the reasoning behind his latest message. Steve Hilton and Riverside County Sheriff Chad Bianco, both Republicans, lead in RealClear Polling’s average of various polls.

The party chair spotlighted the need for California Democrats’ leadership, particularly over Proposition 50, the voter-approved measure that will temporarily implement new congressional district maps, paving the way for Democrats to secure more seats in the U.S. House of Representatives.

“If in the unlikely event a Democrat failed to proceed to the general election for governor, there could be the potential for depressed Democratic turnout in California in November,” Hicks said. “The result would present a real risk to winning the congressional seats required and imperil Democrats’ chances to retake the House, cut Donald Trump’s term in half, and spare our nation from the pain many have endured since January 2025.”

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During a press conference on March 2, Gov. Gavin Newsom said that when he is out in communities, people aren’t talking about the governor’s race. It’s an observation he called “interesting,” considering voting in the primary election starts in May.

“It’s been hard, I think, to focus on that race,” Newsom said, pointing to the attention on President Donald Trump, redistricting, and other matters.

What exactly is California Democratic Party asking of candidates?

In his open letter, Hicks gave directions to candidates.

First, assess your candidacy and campaign. If you don’t have a viable path to the general election, don’t file to get your name on the ballot for the primary election in June. Also, be prepared to suspend your campaign and endorse another candidate by April 15 if you decide to file but can’t show “meaningful progress towards winning the primary election.”

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When is the next California election? Primary election in 2026

California voters will trim the field of candidates for governor on June 2. Only the two candidates who receive the most votes, regardless of party preference, will move on to the November election.  

Paris Barraza is a reporter covering Los Angeles and Southern California for the USA TODAY Network. Reach her at pbarraza@usatodayco.com.



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Supreme Court blocks California law limiting schools from telling parents about trans students

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Supreme Court blocks California law limiting schools from telling parents about trans students


The U.S. Supreme Court has temporarily blocked a California law that limited when schools could require staff to disclose a student’s gender identity, clearing the way for schools to tell parents if their children identify as transgender without getting the students’ approval.

Rear view of multiracial students with hands raised in classroom at high school

The decision came after religious parents and educators, represented by the Thomas More Society, challenged California school policies aimed at preventing staff from disclosing a student’s gender identity.

Erwin Chemerinsky, dean and professor of law at the University of California Berkeley School of Law, said the ruling favors parents’ ability to be informed. “The Supreme Court today rules in favor of the claim of parents to be able to know the gender identity and gender pronoun of the children,” Chemerinsky said.

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FILE:{ }transgender flag against blue sky background { }(Photo: AdobeStock)

FILE:{ }transgender flag against blue sky background { }(Photo: AdobeStock)

The decision temporarily blocks a state law that bans automatic parental notification requirements if students change their pronouns or gender expression at school. The Thomas More Society called the decision a major victory for parents, saying the court found California’s policy likely violates constitutional rights.

Chemerinsky said the Supreme Court’s action is an emergency ruling. “This law is now put on hold. So what this means is that schools can require that teachers and other staff inform parents of the gender identity or gender pronouns of children,” he said.

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Kathie Moehlig, founder and executive director of Trans Family Support Services, said she is concerned about how the ruling could affect students who do not have supportive families.

“I am really concerned about our kids that do come from these non affirming homes, that they know that they’re going to get in trouble, that they’re going to possibly have violence brought against them possibly kicked out of their homes,” Moehlig said.

Moehlig said parents should eventually know, but that the conversation should happen when a student feels safe. “Our students are going to be less inclined to confide in any adults that might be able to help to get them access to mental healthcare, to a support system. They may still tell their peers but they’re certainly not going to tell any other adult,” she said.

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Equality California, a LGBTQ+ civil rights organization, shared a statement:

Equality California, the nation’s largest statewide LGBTQ+ civil rights organization, released the following statement from Executive Director Tony Hoang in response to today’s U.S. Supreme Court shadow docket ruling in Mirabelli v. Bonta regarding California’s student privacy protections for transgender youth. Today’s decision by the U.S. Supreme Court to intervene in this case is deeply disturbing. By stepping in on an emergency basis, the Court has effectively upended California’s student privacy protections without hearing full arguments and before the judicial process has run its course. While not surprising, this move reflects a dangerous willingness to short-circuit the established judicial process to dismantle protections for transgender youth. While this case continues to be litigated, the ruling revives Judge Benitez’s prior decision, which broadly targets numerous California laws protecting transgender and gender-nonconforming students — threatening critical safeguards that prevent forced outing and allow educators to respect a student’s affirmed name and pronouns at school. These protections exist for one reason: to keep students safe and ensure schools remain places where young people can learn and thrive without fear. To be clear: today’s decision does not impact California’s SAFETY Act, which prohibits school districts from adopting policies that forcibly out transgender students. The SAFETY Act remains in full effect, and we will continue defending it. Transgender youth deserve dignity, safety, and the freedom to learn without fear. We will never stop fighting for transgender youth and their families. Equality California will continue working with parents, educators, and advocates to ensure schools remain safe, welcoming, and focused on the success and well-being of every student.

The case now returns to the U.S. Court of Appeals for the Ninth Circuit, which will decide whether the California law is constitutional.



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