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Tag: endangered species

  • New Jersey moves to take bald eagles, ospreys off state list of endangered species

    New Jersey moves to take bald eagles, ospreys off state list of endangered species

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    After decades of efforts to restore populations of bald eagles and ospreys, New Jersey wildlife officials are proposing to take both birds of prey off the state’s endangered species list.

    Once critically threatened in large parts of the United States, populations of both species have recovered significantly thanks to conservation programs. In the 1970s and early 1980s, New Jersey had just one surviving pair of bald eagles. The state now has documented a record 267 nesting pairs, including 255 that laid eggs.

    Ospreys, also known as fish hawks, live mainly along New Jersey’s coast and get their food from the state’s creeks, marshes and bays. Last year, state wildlife experts documented a record 800 occupied osprey nests, up from a low of about 50 in the early 1970s.

    Both species were decimated by habitat loss and the use of pesticides like DDT, which polluted waterways and food sources during and after World War II. Reproductive problems caused by DDT led to bald eagles and ospreys laying eggs that had shells too thin to withstand incubation. The insecticide used to control mosquitos was federally banned in 1972. 

    In the early 1980s, New Jersey began a bald eagle reintroduction program that involved relocating pairs from Canada and fostering them in habitats where they had once been abundant. Populations saw major gains over the last 15 years, particularly in areas around the Delaware Bay. Nesting pairs have more than doubled since reaching 119 in 2012. 

    “The recovery of these species from near extirpation during the 1980s in New Jersey is a dramatic example of what is possible when regulations, science, and public commitment come together for a common purpose,” said David Golden, assistant commissioner of the New Jersey Department of Environmental Protection’s Fish & Wildlife division.

    New Jersey currently lists bald eagles as endangered in the state during their breeding season and threatened during the non-breeding season. Ospreys are currently listed as threatened in New Jersey. Under the proposed rule change, bald eagles’ status would be changed to a species of special concern. Ospreys would be classified as stable.

    NJDEP will accept public comments on the proposed rule change until Aug. 2.

    Bald eagles were removed from the federal list of endangered species in 2007, but they remain federally protected from hunters under the Bald and Golden Eagle Protection Act and the Migratory Bird Treaty Act. In Pennsylvania, which has had success with similar restoration efforts, bald eagles were removed from the state’s endangered and threatened species lists in 2014.

    Increased populations of both species have contributed to more frequent sightings in the region, including encounters with injured birds. In Ocean City, a bald eagle that appeared to be stunned was rescued on a residential block in March and taken to a Delaware wildlife refuge to be rehabilitated. And in February outside Harrisburg, a Pennsylvania state trooper rescued a bald eagle that had been injured after it was struck by a car.

    On the Atlantic City Expressway, the Golden Nugget casino opted to keep an outdated billboard advertisement up two summers ago when it was discovered a family of ospreys had made a home on the structure.

    “Many people have worked for years and decades to bring these species back from the brink, including biologists, volunteers, and all those who protect and steward habitat for rare wildlife,” said Kathy Clark, chief of the state’s endangered and nongame species program. “This is an achievement for all those who work on behalf of the natural ecosystems of New Jersey.”

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    Michael Tanenbaum

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  • Bay Area scientists use game-changing technology to help birds amid climate change

    Bay Area scientists use game-changing technology to help birds amid climate change

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    SAN FRANCISCO BAY — Bay Area scientists are using cutting-edge technology to better understand the decline in bird populations while finding ways to help species that are challenged.

    In the past 50 years, nearly 30% of the birds in North America, some 3 billion birds, have vanished due primarily to habitat loss, pollution, and now climate change. 

    At the southern edge of the bay surrounded by urban sprawl, native and migratory birds have found a haven on a tiny strip of forest.

    Wildlife tracking program
    Wildlife tracking program

    KPIX


    “This is a little island of natural habitat for everything that lives here, specifically we watch the birds,” explained Katie LaBarbera, science director with the Land Bird Program at the San Francisco Bay Bird Observatory. “With climate change, these ecosystems are being impacted, these species are being impacted often in a negative way.”

    She manages the Coyote Creek Field Station in Milpitas. Over the past 40 years, volunteers with the non-profit have studied birds at this year-round bird banding station. They’ve seen a worrisome decline in some species.

    To shed light on the issue, LaBarbera and her team collect data, using a traditional research method known as “bird banding.” Birds are caught gently using special soft nets, they are weighed and their feathers are inspected for diseases or opportunistic infections or pests. Researchers examine them for fat deposits and any signs of molting. A lightweight band engraved with a unique ID number is then fitted around its leg like a loose bracelet before the bird is released.

    If the banded bird is caught again, the identification on the bracelet allows scientists to keep track of its movement. But there is a big downside: the recapture rates are very, very low.

    “You recapture a very low percentage of all the birds you band,” noted LaBarbera. “So you must band a lot of birds to have any of them turn up at another station.”

    Now, a game-changing technology is blowing researchers away. It’s called the Motus Wildlife Tracking System. The tracking system is an international collaborative research network.

    Motus uses radio transmitters to simultaneously track wildlife across vast distances in real-time across the globe, revealing incredible new details. The system has been used on the East Coast for some time. Now, stations are being set up along the Pacific Coast.

     “We’ve never been able to see data like this on the West Coast before,” exclaimed LaBarbera.

    Wildlife tracking program
    Wildlife tracking program

    KPIX


    “It’s been very exciting,” proclaimed Levi Souza. Souza is a Senior Environmental Scientist with the California Department of Fish & Wildlife. He heads up the Department’s Motus Program. “We have these big gaps in our knowledge about the basic life history of a lot of wildlife and to be able to fill in those gaps it’s very gratifying.”

    To date, California has more than 50 Motus stations with antennas strategically placed from the Oregon border to the Salton Sea at the southern end of the state.

    Souza brought CBS News Bay Area to Grizzly Island, where his group manages the Motus tower there. The California Department of Fish and Wildlife put up its first station around the start of 2021.

    “Usually, one station per property is all that’s really required to cover anything that might be moving by or using that property,” explained Souza.

    With Motus, researchers attach tiny tracking tags to small birds, bats – even butterflies and bees.

    When the wildlife flies by a tower, the tag emits a unique, encoded radio signal, that gets picked up by the antenna. The range can be up to 12 miles. The signal then goes to the cloud and ends up in a central database.

    “Then it’s available for the public to take a look at and also researchers,” noted the scientist.

    Some of the nanotags are solar-powered, others have batteries. They are much cheaper than GPS tags that are better for bigger animals such as whales and sharks.

    There are now 1,200 Motus stations across 31 countries monitoring at least 250 species of birds, bats, and insects. Souza told CBS News Bay Area that some of the data he’s seen on the Motus website is stunning and eye-opening.

    “We’ve had detections of Western meadowlarks in the Central Valley, in the northern part of the Valley that were tagged in Montana,” declared Souza.

    What is key and remarkable with Motus is that researchers around the world are pooling their resources and sharing the data. The hope is that by collaborating, the scientists will more quickly understand where the birds are spending time, and identify which areas are the most important to protect, as the planet continues to warm. Climate change is a huge concern for these scientists.

     “Yes. I’m very concerned,” said LaBarbera.

    At the Coyote Creek Field Station, researchers erected a Motus tower and station. So far, they have attached nanotags to four birds: two hermit thrushes and two song sparrows. The San Francisco Bay Bird Observatory hopes to tag 10 more wild birds in the next few weeks.

    LaBarbera hopes that the warming planet, the data – and humans – will help give these birds a fighting chance.

    “The more we slow climate change, the better,” said the scientist, hoping for more than just a wing and a prayer.

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    Len Ramirez

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  • Steelhead trout listed as endangered in California

    Steelhead trout listed as endangered in California

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    The Southern California steelhead trout was listed as endangered after decades of man-made water projects decimated its population.

    The organization Cal-Trout estimates that only about 500 steelhead adults are remaining in a region that stretches from San Luis Obispo to the Mexican-American border.

    Steelhead trout migrate to the ocean and return to freshwater to spawn. To do so, the fish species require unimpeded waterways as they are vulnerable to many stressors and threats.

    Listing the species as endangered, gives the species added protections that can affect future water projects.

    The move will also mean that the fish cannot be harmed, harassed, or killed below any natural or man-made barrier.

    Marlow says that the federal guidelines have been in place for nearly 30 years, requiring endangered species like the steelhead trout to be protected whenever a water project is built.

    “Now we’ll just have to work with the state government to ensure that their operations and their diversions are not having long-lasting and long-term impacts on the habitat,” said Russell Marlow, Senior Project Manager with Cal-Trout.

    Future impacts will more likely happen at outdated infrastructure projects, like the Rindge Dam in Malibu. The dam was built in 1926 and created a huge sediment build-up that affected nearly 25-miles of trout habitat.

    Projects like the Rindge Dam will be removed and over time allow Malibu Creek to flow freely once again to help bring the steelhead trout back from the brink of extinction

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    Gordon Tokumatsu and Missael Soto

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  • Massive endangered whale washes up on Oregon beach entangled, emaciated and covered in wounds from killer whales

    Massive endangered whale washes up on Oregon beach entangled, emaciated and covered in wounds from killer whales

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    New technology tries to protect whales


    New technology helps avoid whale-ship collisions

    05:13

    A member of one of the world’s largest whale species was found washed up on an Oregon shore this week, emaciated, entangled and covered in what appears to be wounds from another whale species. The 46-foot-long fin whale, which was dead when discovered, is one of roughly 11,000 species members in the region. 

    NOAA Fisheries West Coast first announced the stranding at Sunset Beach State Park near the Washington border on Monday, showing the whale washed up on shore with what appears to be a thick rope wrapped around the top of its mouth. 

    428077265-805450858294908-6722700422825382477-n.jpg
    An endangered fin whale was found washed up on Oregon’s shore in February, with officials saying it was emaciated and entangled. 

    NOAA Fisheries West Coast/Seaside Aquarium, MMHSRP #24359


    Officials conducted a necropsy on the subadult male whale and found that it was “thin and emaciated” and “likely died from an underlying illness.” The necropsy team is working to identify an illness that could have resulted in its death, but physically, it appeared as though the animal had come across other issues before washing ashore. 

    “The whale came ashore entangled,” NOAA said, saying the entanglement “appeared to be fresh and superficial.” “The team also recorded wounds from killer whales, called ‘rake marks.’” 

    Rake marks are when killer whales, or orcas, use their teeth to wound other animals, according to the Center for Whale Research. The behavior is thought to be a form of either rough play or aggression, although the center says that some rake marks “can be severe and penetrate deep into the flesh.” 

    More information from the pathology report is expected within a few weeks, NOAA said. 

    According to NOAA’s latest population stock assessment, there are roughly 11,000 fin whales in the waters of the Pacific Northwest region. Fishing equipment entanglements and vessel strikes are among the biggest threats to that population. 

    The endangered species is a form of baleen whale, meaning their mouths are filled with keratin-based baleen rather than teeth, allowing them to filter small prey from the water. They can live nearly a century, growing to be up to 85 feet long and 80 tons. 

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  • Scientists spot previously unknown colonies of emperor penguins in Antarctica

    Scientists spot previously unknown colonies of emperor penguins in Antarctica

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    Previously unknown colonies of emperor penguins have been spotted in new satellite imagery.

    Emperor penguins, considered “near threatened” with extinction, are the world’s largest penguins. They raise their chicks in Antarctic winter on patches of frozen sea ice. But if the ice breaks up before the chicks have fledged, most will die.

    At least some emperor penguins are moving their colonies as melting ice from climate change threatens breeding grounds, according to research released on Wednesday.

    One penguin colony near Halley Bay appears to have moved around 30 kilometers (19 miles) to the east, said Peter Fretwell, a researcher at the British Antarctic Survey. He said unstable conditions beginning in 2016 had made the old location perilous.

    “Emperor penguins have taken it upon themselves to try to find more stable sea ice,” he said.

    The four newly found colonies likely existed for many years, but scientists hadn’t previously spotted them, said Fretwell. They are mostly small colonies, with less than 1,000 breeding pairs each, he said. Scientists currently know of 66 emperor penguin colonies.

    The newly spotted colonies don’t greatly change overall population estimates — currently less than around 300,000 breeding pairs — but they help scientists understand where penguins might be moving, said Fretwell.

    It’s unclear if any of the newly identified colonies could be breakaway groups from other larger colonies, said Daniel Zitterbart, a penguin researcher at the Woods Hole Oceanographic Institution, who was not involved in the study.

    But it’s clear the breeding sites are in flux and a warming world means more “penguins will be on the move,” he said.

    ___

    The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.

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  • Rhinos at risk as temperatures set to become deadly

    Rhinos at risk as temperatures set to become deadly

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    As temperatures rise amid climate change, the world’s remaining rhinos may not be able to withstand the sweltering weather.

    Both black and white rhinos across southern Africa are expected to be severely impacted by the climate change-driven increasing temperatures facing national parks, where a large proportion of the remaining populations of the species are found, according to a new paper in the journal Biodiversity.

    Rhinos are especially vulnerable to intense heat, as they don’t sweat, instead cooling off by sheltering in the shade or bathing in water. The paper marks the first analysis of how climate change may affect these endangered species.

    A file photo of a white rhino and her calf. Climate change may make it too hot for rhinos in southern Africa.
    ISTOCK / GETTY IMAGES PLUS

    “Generally speaking, most, if not all, species will, in one way or another, be negatively affected by the changing climate,” lead author Hlelowenkhosi S. Mamba, a research student at the University of Massachusetts Amherst, said in a statement. “It is therefore important for conservationists to conduct macroecological assessments over large areas to catch trends and model futures for some of the world’s most vulnerable species to prepare to mitigate climate change’s effects, hence minimizing global biodiversity losses.”

    Both species of African rhino have seen rapid population decreases, mainly due to poaching. White rhinos once comprised two species, the northern white rhino and southern white rhino, but the northern white rhino is now considered extinct in the wild. The southern white rhino is listed as “near threatened” on the IUCN Red List, with only around 10,000 individuals left in the wild. Black rhinos are listed as “critically endangered”, with about 3,100 remaining.

    The researchers investigated how increasing temperatures in large national parks across South Africa, Namibia, Zimbabwe, Kenya, Botswana, Tanzania and Eswatini could impact the future of the rhino species living there. They modeled two scenarios in the parks, one based on the Intergovernmental Panel on Climate Change’s (IPCC) high greenhouse gas emissions scenario, and the other being a more mild emissions future, and predicted the amount of rain and temperature that each park would see in 2055 and 2085.

    They found that in each park it was expected to rise by 2.2 degrees Celsius by 2055 and 2.5 degrees by 2085 in the moderate emissions future, while in the IPCC emissions scenario, each park increased by 2.8 degrees Celsius by 2055 and 4.6 degrees by 2085. All but one park was expected to become increasingly dry in these scenarios.

    They then calculated the probability that each park would remain suitable for the rhinos, and found that the increase in temperatures would be more than the rhinos can handle, exacerbated by the decreased precipitation.

    “The temperature conditions in all study parks will become increasingly unsuitable for both species, but it is predicted that white rhinos will be affected earlier than black rhinos,” the authors wrote in the paper. “All the parks are showing drastic changes in the occurrence probability of rhinos.”

    In the high-emissions scenarios, the likelihood of both species still existing will shrink to zero by 2085.

    rhinos at waterhole
    Two rhinos at a waterhole in a South African national park. Higher temperatures and decreased rainfall may make these regions inhospitable to rhinos.
    ISTOCK / GETTY IMAGES PLUS

    “All study parks will have zero probability of occurrence for the species throughout their ranges should conditions reach those represented by the [IPCC high emissions 2085] scenario late in the century,” they wrote.

    These findings, while bleak, may help to prepare conservation efforts for the challenges of the future.

    “This paper highlights the importance of using climate predictions for both park and rhino management,” co-author Timothy Randhir, a professor of environmental conservation at UMass Amherst, said in the statement. “We propose that park managers think now about increasing water supplies, tree cover, watching for stress and planning to allow rhino migration as the world warms.”

    Do you have a tip on a science story that Newsweek should be covering? Do you have a question about rhinos? Let us know via science@newsweek.com.