Saturday, 30 May, 2020


The disappearing birds of North America

A capped Chickadee in New York's Central Park on Oct. 15 2016. The New York Times A capped Chickadee in New York's Central Park on Oct. 15 2016. The New York Times
Bennie Garza | 21 September, 2019, 23:14

The study says people are to blame.

A comprehensive study shows there are almost 3 billion fewer wild birds in North America than in 1970. It was banned for agricultural use in 1972, and laws that protected the birds of prey allowed them to recover. Those efforts showed persistent declines in bird populations.

Some of the most common and recognizable birds are taking the biggest hits, even though they are not near disappearing yet, Rosenberg said. Shorebirds have also lost one-third of their population, and grassland birds lost more than 720 million, resulting in a 53% population reduction.

And because birds are monitored so well, the researchers fear that this may "represent the tip of the iceberg, indicating similar or greater losses" in other animal groups, according to the study. "We're certainly far from having the tools and having the resources to have real high confidence in our estimates of these populations".

The researchers documented a steep decline for migratory birds.

A team of researchers from universities, government agencies and non-profit organisations collaborated on the new study, which combined old and new methods for counting birds.

Marra says these losses are a warning for humans.

The study stated "Species extinctions have defined the global biodiversity crisis, but extinction begins with loss in abundance of individuals that can result in compositional and functional changes of ecosystems". "I really hope this can be a wake-up call". "But we know of lots of examples where sustainable agriculture systems can produce the food we need".

An earlier version of this story misspelled Kristen Ruegg's first name as Kristin. The scientists relied in large part on information gathered through the North American Breeding Birds Survey, a longstanding partnership between scientists and amateur bird watchers.

Despite the decline, Marra says there's still a chance.

GREENFIELDBOYCE: Rosenberg works at the Cornell Lab of Ornithology.

For decades, professional ornithologists have been assisted by an army of devoted amateur bird-watchers who submit their observations to databases and help carry out surveys of bird populations each year. So he wondered how the total number of birds in the sky might be changing.

"It's not just these highly threatened birds that we're afraid are going to go on the endangered species list", he said. They also used data from weather radar installations that can detect flocks of migrating birds. 3 billion birds lost over those 50 years.

Some are "seed dispersers" - they eat seeds from tree fruits and then spread them across wide areas through defecation, helping create new trees; when they're not around, "seed predators", such as rodents, consume seeds from fallen fruits but crack them open, rendering them unable to grow, said Sekercioglu, who has studied birds' roles in ecosystems. But the victims include warblers, thrushes, swallows and other familiar birds.

ROSENBERG: Things like meadowlarks, dark-eyed junco, horned lark, red-winged blackbird.

The study, published today in the journal Science, did not analyze the reason for the drop.

"Every field you lose, you lose the birds from that field", he said.

TED SIMONS: We're certainly far from having the tools and having the resources to have real high confidence in our estimates of these populations. "There's always uncertainty, but if they are wrong, they are likely underestimating the magnitude of population declines". Rosenberg, of Cornell University, is lead author of the study.

KRISTEN RUEGG: Overall, the conclusions weren't necessarily surprising.

Recommended

loading...
...
  • The Whistleblower And Trump Phone Call: What We Know

    The Whistleblower And Trump Phone Call: What We Know

    In this matter, we need not rely on a newspaper account, nor even on the complaint, so far unseen, of a whistle-blower. Maguire and the inspector general, Michael Atkinson, also are expected next week at the Senate Intelligence Committee.
    Jeffrey Epstein accuser Virginia Roberts: 'I was trafficked to Prince Andrew'

    Jeffrey Epstein accuser Virginia Roberts: 'I was trafficked to Prince Andrew'

    She called the 59-year-old "an abuser" after stating she was trafficked by paedophile billionaire Epstein, a friend of the prince. "I deplore the exploitation of any human being and would not condone, participate in, or encourage any such behaviour".
    Gustav Klimt Could Challenge For 2,000 Guineas

    Gustav Klimt Could Challenge For 2,000 Guineas

    However, Gustav Klimt bounced back with a fine performance at the Barronstown Stud Irish European Breeders Fund in June last year. Gustav Klimt moved to the inside down the final furlong and found just enough speed to beat out his compatriot Nebo by a head .
  • Liam Payne Ready For One Direction Reunion

    Liam Payne Ready For One Direction Reunion

    Niall launched his debut solo album, Flicker , in October 2017 whereas Harry launched his self-titled debut solo album in Might of the identical yr.
    Haas retains F1 drivers Grosjean, Magnussen for 2020 season

    Haas retains F1 drivers Grosjean, Magnussen for 2020 season

    Of the remainder, Red Bull and sister team Toro Rosso are unlikely to sign anyone from outside their driver development programme. Magnussen finished a career-best ninth in the drivers' championship in 2018, scoring 56 points from the team's haul of 93.
    Trump says EPA to issue notice to San Francisco on homeless

    Trump says EPA to issue notice to San Francisco on homeless

    CORNISH: The state has sued the Trump administration, I think, more than two dozen times on environmental issues alone. He's greenlit new pipelines, and now he's rolling back regulations meant to make cars and trucks more fuel efficient.
  • Donald Trump names Robert O'Brien, hostage negotiator, as national security adviser

    Donald Trump names Robert O'Brien, hostage negotiator, as national security adviser

    Trump tweeted Wednesday that he has "worked long & hard" with O'Brien and that "he will do a great job!" "He happens to be right". Similarly, Bolton reportedly attempted to undermine the president's halting attempts to make peace with America's other enemies.
    The First Offline Date After Online Relationships

    The First Offline Date After Online Relationships

    The Date Day: How To Behave When you meet your date offline for the first time, there are many things that can go wrong. That is a very responsible step that will either empower or destroy the already formed relationships.
    The Early 2018 World Series Favorites

    The Early 2018 World Series Favorites

    People expected this young Yankees team (which still has more significant talent on the way from AAA) to start competing in 2018. Taking into account a few articles and odds listings that are already out there, here’s our look at the top contenders. 1.
  • Five Young Sports Stars to Watch in 2020

    Five Young Sports Stars to Watch in 2020

    We’ve now entered 2020 and the sporting world will certainly have a lot to show us in the upcoming year. The upcoming year will be telling if the boy can turn from a talented prospect to a world-class player.
    Hear Gang Starr's Surprise New Single, 'Family and Loyalty' Feat. J. Cole

    Hear Gang Starr's Surprise New Single, 'Family and Loyalty' Feat. J. Cole

    During their heyday in the '90s, Gang Starr was one of the most popular and acclaimed East Coast hip-hop acts. Influential hip-hop band Gang Starr have launched their first new track for 16 years.
    How To Make A Profile On A Dating Website

    How To Make A Profile On A Dating Website

    Yes, we live in the world of modern technologies where a teenager knows more about technologies than people in mid 30s. When writing about yourself, keep in mind that people might think of different things and have different associations.

David Silva to join Beckham's Inter Miami in the summer David Silva to join Beckham's Inter Miami in the summer Uruguayan players Luis Suarez of FC Barcelona and Edinson Cavani of Paris Saint Germain have also been linked to Inter Miami . He agreed to a year-long extension to his contract for this season, but has said it was likely to be his last with the team.

Mercedes eager to win again but remain wary of past Singapore issues Mercedes eager to win again but remain wary of past Singapore issues Charles Leclerc: "Singapore is maybe the toughest track for us drivers physically, just because of the heat and the humidity".

Booker seeks $1.7 million infusion to stay in Democratic White House race Booker seeks $1.7 million infusion to stay in Democratic White House race If his campaign can't raise $1.7 million in the next nine days, he says, he doesn't see a "legitimate long-term path forward". Bernie Sanders and Mayor Pete Buttigieg of South Bend, Indiana, who raised more money last quarter than any other candidate.

Melania Trump pays homage to Australian Prime Minister in J. Mendel gown Melania Trump pays homage to Australian Prime Minister in J. Mendel gown Morrison says the Australian delegation brings with it the thanks and respect of 25 million Australians for the U.S. The Australian president additionally attended a State Division luncheon hosted by Secretary of State Mike Pompeo.

Delivery irregularities: US FedEx pilot arrested by Chinese authorities Delivery irregularities: US FedEx pilot arrested by Chinese authorities Chinese authorities searched Hohn's luggage after the arrest and reported they had found air gun pellets with him. Hohn's case adds another pressure point for FedEx in China, where the company faces serious political risks.

Jennifer Lopez walks Versace runway in reimagined version of iconic Grammys dress Jennifer Lopez walks Versace runway in reimagined version of iconic Grammys dress Now, nearly 20 years later, J.Lo wore a remaking of the iconic dress at Versace's Spring 2020 show during Milan Fashion Week . Lo and her green Versace gown became the site's top search after the Grammys.

After social media complaints, Brady makes nice with refs After social media complaints, Brady makes nice with refs ESPN also reports that there has been a 16.2% increase in total penalties compared to the first two weeks of last season. There were plenty of egregious penalties throughout the game that left officials no choice but to throw the flag.

Man City falls just short of EPL record with 8-0 win Man City falls just short of EPL record with 8-0 win Pep Guardiola's men will, of course, have tougher challenges than bottom-placed Watford, who are yet to win this season. It was the flawless reaction from City to last weekend's surprising 3-2 loss at Norwich.

Allen leads Bills' sweep at Meadowlands with win over Giants Allen leads Bills' sweep at Meadowlands with win over Giants Enter the Cincinnati Bengals and Buffalo Bills, both readying to square off with plenty of questions surrounding both clubs. Both the offensive line and the defense have underwhelmed and harken back to what Cincinnati was in 2018.

American Sofia Kenin wins Guangzhou WTA title over Stosur American Sofia Kenin wins Guangzhou WTA title over Stosur For a former US Open champion, this has been a huge fall, having tasted the number four ranking in the world at one point. Third-seeded American Kenin subsequently triumphed 7-6 (2) 4-6 6-1 against Anna Blinkova of Russian Federation .

Possible Canadian cases of vaping illnesses being investigated: health officer Possible Canadian cases of vaping illnesses being investigated: health officer To date, federal public health authorities have received reports of 530 cases in 38 other states and one US territory. Anyone who uses e-cigarette products and is experiencing respiratory issues should promptly consult their provider.

'Gully Boy' is India's official entry to Oscars 'Gully Boy' is India's official entry to Oscars India has submitted films for the foreign film category at the Oscars since 1957, a year after the incorporation of the category. Assamese film Village Rockstars , directed by Rima Das, was India's official submission to the Oscars previous year .

General Overview of Cisco CCNA R&S Questions and Answers In addition to this, they will also build their skills and knowledge levels required to implement WLAN in a small/medium network. At the end of the course, they will also be able to resolve regular issues with EIGRP, STP, and OSPF in IPv4 and IPv6 networks.

How to learn English with the news Your main purpose is to master or improve your language skills, so it is not so big deal if you listen to or read something fake. How to learn English through the news It is undeniable that the news is a great source of the words that are used everywhere.

How Technology Has Completely Changed the Way We Spend Money How Technology Has Completely Changed the Way We Spend Money The Rise of Mobile Payments Over the last few years, all of the major mobile innovators have stepped into the mobile payment game. As of 2016, Apple Pay had 12 million monthly users , a figure which is sure to rise substantially in the coming months and years.