fbpx

Frontline Dispatches – November 2019 Vol. I, No. 11


DOWNLOAD PDF

North & South America

Frontline Dispatches - North & South America

Nearly a third of America’s bald eagles are infected with a potentially fatal virus. Scientists at the Univ. of Wisconsin-Madison, the USGS National Wildlife Health Center and the Wisconsin Dept. of Natural Resources identified the virus while investigating WRES, Wisconsin River Eagle Syndrome, which causes eagles near the Lower Wisconsin River to stumble and have seizures. Since then, BeHV, bald eagle hepacivirus, has been found in 32% of 47 eagles from 19 states across the contiguous US. However, the virus may not be related to WRES, and research is ongoing.

California bans the production and sale of animal fur. Per a BBC News report, as of 2023, people in California will no longer “be able to make or sell any clothing, shoes or handbags made from fur.” When he signed the bill, Gov. Gavin Newsom said, “California is a leader when it comes to animal welfare and today that leadership includes banning the sale of fur.” (No word on the use of leather, aka fur without hair, or any reference to the environmental impact of artificial furs, as outlined here.)

Macy’s and Bloomingdale’s also ditch fur. The announcement aligns with fur-free policies of other fashion brands, including Prada, Chanel, Gucci, Michael Kors, Burberry and more. Yet Anna Wintour, editor-in-chief of Vogue, had a different take on fur in an April 2019 interview with CNN’s Christiane Amanpour. Wintour understands the environmental impact of synthetic substitutes for leather and fur; within the context of sustainability, she noted that “fake fur is obviously more of a polluter than real fur,” adding that it’s up to the retailers to follow best practices and be ethical.

Deer are the most economically important quarry in North America, according to the NDA, National Deer Alliance. Around 83% of hunters in the US identify as deer hunters. NDA keeps members informed on deer issues across North America through a weekly e-newsletter, social media and the NDA website. Membership is free.

Legislation to return management of gray wolves to the states of Minnesota, Wisconsin and Michigan has been introduced by two Minnesota congressmen. According to a Sept. 28 report in The Dickinson Press, groups including the American Farm Bureau Federation, National Farmers Union, the US Cattlemen’s Association and the Rocky Mountain Elk Foundation support the proposal, which would remove the wolves from federal protection under the Endangered Species Act.

The House Natural Resources Committee advanced NAWCA, the North American Wetlands Conservation Act, in a bipartisan vote. Since its inception in 1989, NAWCA grants totaling more than $1.73 billion have leveraged $3.57 billion in contributions from partners to “protect, restore, enhance and manage more than 30 million acres of habitat for migratory birds and other wildlife in all 50 states,” according to the Congressional Sportsmen’s Foundation.

Well-managed trophy hunting is important to wildlife management, writes US Forest Service biologist Brett Roper in Utah’s Herald Journal. If trophy hunting is problematic, he asks, why is it allowed? Because to a large extent trophy-hunting fees pay for most wildlife management in the US, and trophy hunters often spend far more than other hunters. Roper concludes, “instead of eliminating trophy hunting, we simply need to better manage this activity.”

Indiana’s Natural Resource Commission added ruffed grouse to its endangered species list. The Congressional Sportsmen’s Foundation supported the listing, proposed by the Ruffed Grouse Society, which calls for the “swift implementation of a strong action plan focused on sound scientific wildlife and forestry management practices with clearly defined goals and benchmarks for recovery.”

Vermont Fish & Wildlife needs ruffed grouse hunters to collect blood and feather samples. A kit with instructions, sampling supplies and mailers will be provided. Call state wildlife biologist Chris Bernier at (+1) 802-289-0628 or email him at chris.bernier@vermont.gov.

Bison range expands in the Dakotas. CNN reported that on October 11 four bison were released into a new section of South Dakota’s Badlands National Park. The 22,000-acre (8,900 ha) addition to the park came from a 2014 land swap with a local ranch, aided by the US Forest Service and the World Wildlife Fund. The project also included new fencing to separate the bison from cattle. This is the first time bison have populated this part of South Dakota in 150 years; some 1,200 bison already inhabit the park’s previous, more remote 200,000 acres (81,000 ha). (See also “The Yellowstone Bison Range War.”)

The Senate Environment & Public Works Committee approved Aurelia Skipwith to become Director of the US Fish and Wildlife Service. Skipwith, the Deputy Assistant Secretary for Fish, Wildlife and Parks at the Dept. of the Interior, was nominated to the USFWS post by Pres. Trump in July. Her nomination now awaits a floor vote in the Senate.

Mountain biking can create hazards for humans and wildlife, according to a recent New York Times report. “We tell people not to run in grizzly bear habitat, to make noise and to be aware of their surroundings,” said the former coordinator for the grizzly bear recovery program of the Fish and Wildlife Service. “[But the Forest Service is] permitting the very activities we are telling people not to do.” In 2016, a ranger in Glacier National Park was killed by a grizzly that he collided with while mountain biking.

Expansion of the US border wall with Mexico will interrupt vital migration corridors for wildlife; biologists are raising the alarm in this PRI report.

The First Americas Regional Conference on the Illegal Trade in Wildlife, October 3-4 in Lima, was organized by the Government of Peru in cooperation with the Government of the UK, the UN Office on Drugs and Crime and WCS, the Wildlife Conservation Society (People Not Poaching). During a workshop, experts from indigenous, peasant and local communities as well as scientific experts developed a set of priority recommendations. The statement “Voices of the Communities”  by 20 representatives of indigenous communities from Peru, Bolivia, Guyana, French Guyana, Colombia, Costa Rica, Nicaragua, Mexico and Argentina, was read out during the plenary session on October 4. The event also developed a sustainable use and livelihoods strategy for Latin America and the Caribbean.

Chile’s iconic huemul deer are affected by a life-threatening foot disease caused by parapoxvirus. Only about 2,500 of these endangered southern Andean deer, Hippocamelus bisulcus, remain in the wild; 24 cases of the disease have been found in Bernardo O’Higgins National Park. The disease causes partial or complete loss of the hoof, leaving animals susceptible to starvation and predation. Parapoxvirus probably arrived between 1991 and 2004, when livestock were introduced to the region. Wildlife veterinarians from UC Davis and Chile who recently identified the disease are now searching for a treatment.

Marsh deer have been found in the floodplains of the Teles Pires River in mid-northern Mato Grosso, Brazil, according to scientists from the IUCN Deer Specialist Group. The marsh deer—Blastocerus dichotomus, the largest Latin American cervid—is restricted to wetlands (DSG Newsletter #31, Page 9).

The habitats or lives of at least 500 jaguars were lost to fire in the Amazon forests of Brazil and Bolivia as of September 17. The numbers will increase until the rains come, researchers say. In Bolivia, the fires have so far destroyed more than 2 million hectares (5 million acres) of forest in a region with the highest density of cat species in South America. Scientists predict that many more jaguars will starve or turn to killing livestock as a result of the fires, likely increasing conflict with ranchers.

Prompted by the Amazon fires, 230 global investors with $16.2 trillion in assets have warned hundreds of companies to meet their anti-deforestation commitments or risk economic consequences. In a related move, according to a Mongabay story, the VF Corp., which owns Timberland and The North Face, has stopped buying Brazilian leather in an attempt to push Pres. Bolsonaro to act against deforestation.

Europe

Frontline Dispatches - Europe

More forest + less meat = climate protection. Reforestation can decisively mitigate global warming, but researchers at Germany’s Karlsruhe Institute of Technology have determined that “a sufficient increase in forest areas requires a transformation of the food system and, in particular, the reduction of meat consumption.” (Commercially raised meat, that is, not wild game.) Their study appears in Environmental Research Letters. Trees absorb CO2 greenhouse gas from the atmosphere and thus fight global warming. However, forests compete with land for agriculture, and population growth and changes in dietary habits are driving the worldwide demand for meat.

Hunters are well represented in Europe, says a 2018 statistical overview from Germany. The stats show 7.35 million licensed hunters in 35 European countries (including Turkey) with a total population of some 605 million. The stats do not include the Russian Federation; and for Montenegro, a country of 700,000 inhabitants, there was no information on hunter numbers. The 35 countries thus have 82.3 non-hunters for every hunter. The Republic of Ireland tops the list with 12 inhabitants per licensed hunter, followed by Finland with 17. Norway, Sweden and Denmark  all rank in the top 10, with 25, 31 and 33 non-hunters per hunter, respectively. Hunters figure prominently also in Spain, Greece, Portugal and France. The United Kingdom ranks 14th, with about 800,000 active hunters, or one in 76 inhabitants. In absolute numbers, France tops Europe with 1,331,000 hunters, beating out Spain (980,000) and the UK and followed closely by Italy with 750,000 hunters. (By contrast, in 2016, the most recent year for which statistics are available, the US had some 11.1 million hunters age 16 or older among a population of 230 million, or almost 21 non-hunters for every hunter.) 

Africa

Frontline Dispatches - Africa

Lion, Cape buffalo, cheetah, giraffe, rhino and zebra became farm animals, along with 26 other wild species, in May this year when South Africa amended its Animal Improvement Act, which governs livestock breeding. The legislation was slipped through without public consultation; it allows artificial insemination, the collection of semen and embryos and the transfer of “genetic material” to be collected, evaluated, processed, packed and sold. A Daily Maverick story explains how these species now can be manipulated as “farm stock.” There is no precedent anywhere for such a mass “domestication” of wildlife. Conservation Frontlines will discuss this in January.

Zambia’s High Court has ruled that the controversial Kangaluwi copper mine may go ahead, dismissing an appeal against the mine on a technicality. After a landmark legal case brought by conservationists and NGOs against Zambia’s Attorney General and mining company Mwembeshi Resources Limited, the hearing has apparently ended nine years of political intrigue, interference by Zambian authorities and alleged corruption. The mine site is across the Zambezi River from Zimbabwe’s famous Mana Pools National Park, a UNESCO World Heritage Site. Africa Geographic reports that the verdict is “sending shock waves through the Zambian and regional tourism community.”

In September, Zimbabwe’s Mana Pools was a devastating sight, one that bears little or no resemblance to the park at the same time last year. The park has been ravaged by drought—the landscape is scorched, food is scarce and the famous pools, if not already dry, are becoming hollowed-out memories. See Janet Winterbourne’s dramatic photos of the drought’s impact on elephants and other wildlife in Africa Geographic.

The Okapi Wildlife Reserve in northeastern Congo, created to protect the secretive Okapia johnstoni, will come under a new management agreement between the Wildlife Conservation Society and the Congolese Nature Conservation Agency. On October 21, Mongabay reported that the new partnership is meant to restore stability in the reserve and surrounding forests and improve the welfare and operations of rangers and local communities.

Nordic Safari Club challenges anti-hunting activists—including Ricky Gervais, Kevin Pieterson, Trevor Noah, Piers Morgan, Zac Goldsmith, Chris Packham, Brian May, Ed Sheeran, Carrie Symonds, Lewis Hamilton, Hannes Jaenicke and Eduardo Gonçalves—to “take over” 10 giraffes, which otherwise will be culled as surplus in Namibia and their meat distributed to local communities. NSC communications officer Jens Ulrik Høgh has written an open letter informing the celebrities of the situation and noting that buyers must have the animals professionally caught and translocated to a suitable habitat before the end of April 2020.

Elephant poaching in a remote and pristine section of Nouabalé-Ndoki National Park in northern Congo has been discovered. A study of the impact of new logging roads on the area’s gorillas and chimpanzees also found that the roads enabled poachers to reach elephants there for the first time.

One of Kenya’s largest tuskers has died at the age of 52, apparently of natural causes. “Matt” was first collared in 2002 and roamed farther than any other tracked Kenyan elephant, a loop of approximately 245 km (152 mi) around Mt. Kenya and north across Samburu for 220 km (137 mi). His remains were found by an anti-poaching unit on October 7. Photos of this extraordinary bull, as well as a map of his movements between 2002 and 2019, are on Save the Elephants.

Tembe Elephant Park holds eight of Africa’s known remaining 30 big tuskers, bulls with tusks exceeding 100 lbs (45 kg) per side. The park, in South Africa near the Mozambique border, will expand by up to 26,000 hectares (64,200 acres) to allow its elephant herd of 200 to increase. The park is owned and managed by local communities; at the premiere of the documentary Last of the Big Tuskers, in Durban, tribal leader iNkosi Mabhudu Tembe told guests, “we have already identified some pockets of land adjacent to the park. On the eastern boundary there is potential to extend the park by about 15,000 hectares (37,100 acres) . . . And we also have potential in the southern boundary to do the expansion that could also be a total of 11,000 hectares (27,100 acres).” According to a Mongabay story on 14 October, he gave no specifics about funding the expansion, saying only that a budget was “almost complete.”

A population of critically endangered riverine rabbits (Bunolagus monticularis) has been discovered in the Baviaanskloof area of South Africa’s Southern Cape. This is a new distribution of the species. Of 38 camera traps placed in 12 clusters for 50 days, eight captured images of riverine rabbits.

Asia

Frontline Dispatches - Asia

Snow leopards depend on their human neighbors. Panthera uncia is a “vulnerable species,” with an estimated 4,000 left in the wild, and protected areas in the Nepal Himalaya have been set aside for them. But snow leopards range over much larger areas, and co-existence with humans is key to their survival. Cambridge University researchers investigated local attitudes towards the cats and conservation methods. People who felt negatively were most worried about the potential danger to livestock and to themselves. Positive attitudes were mostly driven by cultural beliefs in the intrinsic value of the species, and by the potential benefits of attracting tourists and controlling wild herbivores. The report does not mention hunting tourism.

Pakistan strengthened wildlife legislation at its 18th cabinet meeting in August by approving the Punjab Wildlife Protected Areas Act, establishing the Kalabagh Private Game Reserve and enhancing licensing for grey and black partridge. Pakistan’s Dawn newspaper also reported improvements in urial sheep conservation, trophy-hunting rules and brown bear protection.

Pakistan’s markhor wild goat is no longer endangered; nor is the blind dolphin of the Indus River. Both species were thought to be on the verge of extinction. According to an October story in the Tribune, Joint Secretary Suleman Khan delivered the news to the National Assembly’s Standing Committee on Climate Change, adding that only 12 markhor hunting permits are issued per year, at more than $100,000 each, and that no more will become available until the markhor population is confirmed. Khan noted flaws in provincial wildlife surveys and announced that, beginning this year, all Pakistan wildlife species will be surveyed along standardized formats.

The World Wildlife Fund and Intel will use AI to monitor Siberian tigers in northeastern China. With image recognition technology and other forms of artificial intelligence, endangered species can be tracked and their behaviors understood more accurately. According to a report in Synced Review, similar technology is being used to protect polar bears, chimpanzees, whales and elephants.

World

Frontline Dispatches - World

South Atlantic humpback whales have recovered to their pre-exploitation levels of some 25,000 animals after commercial whaling reduced the population to 450 a century ago. A study by the Univ. of Washington and the Alaska Fisheries Science Center showed the whales are repopulating more quickly than expected. The researchers say their new software and advanced modeling techniques can be used to determine more accurate population numbers in other species also and are making them available for use elsewhere.

Half of our planet’s surface remains relatively wild, but many of these “low human-impact” areas—not covered with water or ice—are being broken into smaller, isolated pieces. A two-year satellite-mapping inventory by the National Geographic Society, released in early October, concluded that despite widespread environmental damage by humans, the opportunity to protect “vast, relatively wild regions of Earth [as connected habitats] for the benefit of people and other living species” still exists. Most of these areas are in the boreal forests of northern Canada and Russia, the highlands of Central Asia, the deserts of North Africa and Australia, and in the Amazon Basin.

Preserving Earth’s remaining wilderness areas will reduce extinction risks for terrestrial species by more than half. In Nature, researchers write that species persistence is highly dependent on wilderness habitat in good condition and that “retaining these remaining wilderness areas is essential for the international conservation agenda.” (Note that regulated hunting protects wilderness habitats across the Americas, Europe, Africa and, to a lesser extent, in North and Central Asia. Hunting provides economic, ecologic and socio-cultural incentives for local communities to strengthen habitat protection.)

Extreme snowfall wiped out the Arctic’s 2018 breeding season. Last year, vast amounts of snow were spread across most of the Arctic and did not melt until late summer, if at all. In October, in the journal PLOS Biology, researchers documented the consequences of this in northeast Greenland, where they found “the most complete reproductive failure ever encountered”; few plants and animals were able to reproduce. Such poor reproduction across all levels of the ecosystem has never been seen before. Although the Arctic is warming and snow/ice cover is retreating, climatic variability increases the risk of such extreme events.

Carnivores deliver important benefits to society, but studies emphasize the problems they cause. Researchers in Spain, Germany, Poland, South Africa, the US and the Netherlands have reviewed more than 500 scientific papers and found that “globally, research on the relationship between carnivores and humans is deeply skewed” toward conflict and ignores the ecological benefits that predators provide. The studies also tended to focus on large species—bears, wolves and big cats—and ignore small and medium-sized carnivores; and did not use the social sciences to fully understand the relationships between humans and carnivores.

A free global online Animal Study Registry launched in January 2019 offers scientists a service that will “significantly support the planning of animal experiments and at the same time contribute to the improvement of animal welfare.” Patterned after a similar documentation process for human clinical trials, the ASR is meant to avoid redundancy and should “enhance both the knowledge gained from animal studies and the reproducibility of results.” Researchers can protect their intellectual property for up to five years before the full results of their studies become public.

New modeling helps predict extinction drivers for species. Faced with unprecedented climate change, animals and plants are scrambling to keep up, with mixed results. The World Economic Forum reports that the impacts of environmental extremes—such as more or greater heat waves, longer heatwaves or heat waves affecting larger areas—can now be forecast for different animal and plant species. The new model gives wildlife managers and conservationists insight into the potential vulnerabilities of species based on their natural histories and historical environments.

New Additions to the Conservation Frontlines Library

Author

Year

Title

Library Category

Ali Syed Ashraf (The Express Tribune) 2019 Over 70% of Siberian migratory birds have stopped visiting Pakistan Conservation & Wildlife Management
Boynton Graham (The Sunday Times)

2019

Ban on importing wildlife trophies would be a mistake Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Rural Communities, the Hereditary Custodians of Land and Wildlife, Conservation & Wildlife Management
Brown Michael, Cheng Samantha & Tolisano Jim (Mongabay.com)

2019

From threat to solution: Rethinking the role of communities in nature conservation Rural Communities, the Hereditary Custodians of Land and Wildlife, Conservation & Wildlife Management
Bylander C B

2019

Aspen, Minnesota’s dominant tree species, stands for more than autumn Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Conservation & Wildlife Management
Cornell Lab of Ornithology

2019

New Study Finds U.S. and Canada Have Lost More Than One in Four Birds in the Past 50 Years Conservation & Wildlife Management
Daley Jim (Scientific American)

2019

Silent Skies: Billions of North American Birds Have Vanished Conservation & Wildlife Management
Dasgupta Shreya (Mongabay)

2019

New maps show where giraffes live — mostly outside protected areas Conservation & Wildlife Management
Desjardin Larry (MOJO)

2019

Does The E-Bike Invasion Represent A Menace To Wildlife And Character Of Public Lands? Conservation & Wildlife Management
Di Marco Moreno et al.

2019

Wilderness areas halve the extinction risk of terrestrial biodiversity Conservation & Wildlife Management
Fobar Rachel (National Geographic)

2019

Lion trophy approved for import into U.S., stirring controversy. Here’s why that matters. Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Rural Communities, the Hereditary Custodians of Land and Wildlife, Conservation & Wildlife Management
Gilhad Moshe

2019

Israeli Director’s Emmy-winning Film Could Change What You Believe About the Hunting Industry Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Conservation & Wildlife Management
Goldman Jason G (BioGraphic)

2019

Restoring Harmony in Haida Gwaii Rural Communities, the Hereditary Custodians of Land and Wildlife, Conservation & Wildlife Management
Goodell John (MOJO)

2019

Americans Love Public Lands And Species Conservation But How Do We Pay For Them? Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Conservation & Wildlife Management
Gorman James (New York Times)

2019

Hurricanes May Kill Some Birds, but Humans Are the Real Threat Conservation & Wildlife Management
Hema Emmanuel M et al.

2017

Population dynamics of medium and large mammals in a West African gallery forest area and the potential effects of poaching Conservation & Wildlife Management
Henley, Michelle D & Cook Robin M 2019 The management dilemma: Removing elephants to save large trees Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Conservation & Wildlife Management
Irmer Juliette (FAZ) 2019 Alle Vögel sind schon rar Conservation & Wildlife Management
Jahner J P et al. 2018 The genetic legacy of 50 years of desert bighorn sheep translocations Conservation & Wildlife Management
Kolata Gina (New York Times) 2019 Eat Less Red Meat, Scientists Said. Now Some Believe That Was Bad Advice. Wild Foods
Koro Emmanuel (Express News) 2019 Rural Namibians pin hopes for prosperous future on tourism lodges and hunting despite animal rights’ anti-use threats Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Rural Communities, the Hereditary Custodians of Land and Wildlife
Kroakow Morgan 2019 Endangered panthers are stumbling as though they’ve been poisoned and scientists don’t know why Wild Diseases
Leysath Scott 2019 Sweet Jalapeño Grilled Duck Recipe Wild Foods
Leysath Scott 2019 Horseradish Duck Burger Recipe Wild Foods
MacLaren C, Perche J & Middleton A 2019 The value of hunting for conservation in

the context of the biodiversity economy

Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Conservation & Wildlife Management
Martin Rowan (Daily Maverick) 2019 CITES – a flawed convention that does wildlife conservation no favours Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Rural Communities, the Hereditary Custodians of Land and Wildlife, Conservation & Wildlife Management
Max-Planck-Institut 2019 Vogelsterben am Bodensee Conservation & Wildlife Management
Max-Planck-Institut 2019 Birds In Serious Decline At Lake Constance Conservation & Wildlife Management
Millette Katie L et al. 2019 No consistent effects of humans on animal genetic diversity worldwide Evolutionary Consequences of Hunting
Parker Simon (The Telgraph) 2019 Never leave without a rifle: Life in Ittoqqortoormiit, the Arctic’s loneliest town Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Rural Communities, the Hereditary Custodians of Land and Wildlife, Conservation & Wildlife Management
Pendley Michael (OutdoorLife) 2019 How to Cook Deer Organs & Offal Wild Foods
Petersen Christine 2019 Does hunting change horn size over time? Not always, new research says Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Evolutionary Consequences of Hunting
Pinnock Don (Daily Maverick) 2019 SA reclassifies 33 wild species as farm animals Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Conservation & Wildlife Management
Robbins Jim (New York Times) 2019 When Biking and Bears Don’t Mix Conservation & Wildlife Management
Robinson Alex (OutdoorLife) 2019 6 Wild-Game Rituals That Are About Much More Than Taking Meat From Field to Fork Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Wild Foods
Roper Brett 2019 Well-managed trophy hunting important to wildlife management Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Conservation & Wildlife Management
Rosenberg Kenneth V et al. 2019 Decline of the North American avifauna Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Conservation & Wildlife Management
Tutton Mark, Brown Holly & Bresnahan Samantha (CNN) 2019 Is Ted Turner the real Captain Planet? Conservation & Wildlife Management
Strampelli Paolo 2019 Trophy hunting is not all black and white Hunting in the 21st Century; Hunting Ethics and Fair Chase; Hunting in Society, Conservation & Wildlife Management
Umweltinstitut Muenchen 2017 Vogelsterben nimmt dramatische Ausmaße an Conservation & Wildlife Management
Wilkinson Todd (MOJO) 2019 Wildlife Diseases: A Global Expert Takes Stock Of Greater Yellowstone Wild Diseases
Wilkinson Todd (MOJO) 2019 Greater Yellowstone’s Coming Plague Wild Diseases
ZEIT-Online 2019 Forscher warnen vor Vogelsterben Conservation & Wildlife Management
Zimmer Carl (New York Times) 2019 Birds Are Vanishing From North America Conservation & Wildlife Management