昆明市打胎一共多少钱(昆明多少天能打胎) (今日更新中)

Being home more during the pandemic, and with less traffic on the roads from stay-at-home orders, many people have heard more bird calls and the sounds of nature in urban areas. Scientists now say at least one bird species has been able to adjust their bird song because of the lack of human noise to compete with.Researchers have been studying the white-crowned sparrows in and around San Francisco for more than two decades. They compare their songs in recent years with recordings made in the 1970s.They found as traffic levels increased over the decades, the lowest frequencies of the sparrows’ song rose. This allowed their song to be heard above the low hum of vehicles. The top frequencies remained the same, so the total frequency bandwidth of their communication was narrowed.Degrading their songs this way, and limiting their range, makes them less effective at deterring rivals, attracting mates, or hearing their own chicks, according to researchers. In noisy environments, birds have to sing louder, which research has shown can result in stress and can speed up a bird’s aging and disrupt their metabolisms.When stay-at-home orders and coronavirus pandemic safety measures were put in place in March, the lead researcher, Elizabeth Derryberry, remembers seeing an image of the Golden Gate Bridge in San Francisco completely empty of cars or humans. She wondered how the sparrows were responding.They compared audio recordings of the bird songs from spring 2015 and 2016, to those taken this spring. The recordings were made in a variety of urban and rural locations around the greater San Francisco area.“We found that birds sung at lower minimum frequencies, achieving greater bandwidth songs in newly open acoustic space. An increase in frequency bandwidth results in the transmission of more information and greater vocal performance,” the study states.The samples taken in 2020 revealed the white-crowned sparrows had changed their tune, so-to-speak, and were singing softer and using a wider range of frequencies. They also were able to communicate twice as far as previous recordings.“This doubling in communication distance could elevate fitness by reducing territorial conflicts and increasing mating potential,” researchers stated.Researchers also say this explains why more people report hearing birds during the pandemic. Since the songs are traveling farther distances, humans are able to hear more of them.They also say the changes in the birds’ songs were more pronounced in urban areas compared to the rural location samples. This would make sense, they say, because the traffic noise did not change as drastically in the rural locations during the pandemic.“Our findings indicate that songbirds like white-crowned sparrows have a striking capacity to exploit newly empty soundscapes following acute but ephemeral amelioration of noise pollution, suggesting that lasting remediation might engender even more promising outcomes, such as demographic recovery and higher species diversity in urban areas,” they concluded. 3055

BOISE, Idaho — It’s important to know one thing when traveling in the air this holiday season: what to pack, and how to pack it.A Boise, Idaho airport is advising travelers to leave presents unwrapped."People will bring wrapped Christmas gifts and if TSA sees something in that gift that they may not like, they have to unwrap that gift," Boise Airport's marketing manager Sean Briggs said. 403

BARONA, Calif. (KGTV) -- As the nation observes Native American Heritage Month, the tragic and triumphant story of Matt LaChappa, the longest-tenured San Diego Padres player, demonstrates there are different types of tribes.With a 95 mile-per-hour fastball and a 6'3" frame, LaChappa was precisely the kind of prospect the San Diego Padres were looking for.The team drafted him out of high school in 1993, and they found him in an unlikely place: the Barona Reservation."Matt was like any other kid on an Indian Reservation, a lot of poverty," said his father Clifford LaChappa.The elder LaChappa admits he never expected to see his son go from the ball fields at Barona to the second round of the MLB draft, then to a promotion on the Padres Class A Advanced farm team, which at that time was the Rancho Cucamonga Quakes."He was pegged to make it, but God had other plans for him," Clifford LaChappa said.RELATED: Celebrating Community: Kumeyaay People of San DiegoWhile Matt was warming up in the bullpen during a game on April 6, 1996, he suffered a heart attack. He spent months in a coma.Today, he's 44 years old and living with a brain injury. He can speak a few words, like "hi Dad," with difficulty."He can't get up, he can't walk," Clifford LaChappa said. "He can't shave or shower."That's where his first tribe comes in. Family members and caregivers provide Matt with round-the-clock care.But behind the scenes, there's a second team in Matt's corner. RELATED: Native American tribes join to celebrate life and heritage at San Diego powwowEvery year since he collapsed, the Padres have signed Matt to a rookie contract so that, in part, he has ongoing access to medical care."They're totally our family," Clifford said. "They're always there for Matt."Matt LaChappa now has a little league field named in his honor in Lakeside, and he gives right back to the community that supports him. With help from the Barona tribe, Matt and his family host an annual charity golf tournament. The proceeds fund five academic scholarships a year for Native American students in San Diego County."Why was it important to do something like that?" I asked Clifford."Because of Matt," he responded. A few feet away, Matt howled.RELATED: Powwow showcases Native American traditions"He's crying," Clifford explained. "Because Matt was a giver."On the 25th anniversary of the day that changed Matt LaChappa's life, the Quakes invited Matt and his family to throw out the first pitch."When we got there, when we saw everybody clap, it was like a comfort. They really cared," Clifford said. It was a sign of yet another tribe in Matt LaChappa's corner. 2649

BENTONVILLE, Ark. – Walmart announced Tuesday that it’s giving out another round of cash bonuses to its workers and that it will be closed on Thanksgiving this year.BonusesThe retail giant says full-time hourly associates will receive 0, while its part-time and temporary associates will be paid 0.Associates at the company’s stores, clubs, distribution centers and fulfillment centers will qualify, as will drivers, managers, and assistant managers. Those employed by the company as of July 31 will qualify, and it will pay out on Aug. 20.The bonuses will add up to about 8 million, according to Walmart.“Our associates have been working at an incredible pace, they’ve solved problems, and they’ve set an amazing example for others,” said John Furner, President and CEO of Walmart U.S. “To further appreciate their incredible work, we are pleased to share another special cash bonus this summer.”This is the third special bonus Walmart has given to associates in 2020, totaling .1 billion in bonuses so far this year.ThanksgivingUnlike in years past, Walmart says it will be closed on Thanksgiving this year, as will Sam’s Club.“We know this has been a trying year, and our associates have stepped up. We hope they will enjoy a special Thanksgiving Day at home with their loved ones,” said Furner. “We are certainly thankful to our people for all of their efforts.”Walmart stores and Sam’s Club locations will operate normal hours on Wednesday, Nov. 25.Editor's note: The original headline on this article mistakenly left out the word "million." 1565

BLOOMINGTON, Minn. (AP) — The FBI is investigating after a piece of rope resembling a noose was found in a Black firefighter's locker in the Minneapolis suburb of Bloomington. An FBI spokesman confirmed Saturday the bureau is investigating and said that the case is in its initial stages. Bloomington officials had asked the FBI to investigate. Officials say that the rope was tied into what appears to be a crude noose and was discovered at a Bloomington fire station on June 15. The discovery was reported to Fire Department leaders eight days later, on Tuesday. The fire chief says such acts that “embody hate, intimidation, and aggression will not be tolerated.” Mayor Tim Busse says he's “disgusted, angry, and embarrassed by this cowardly act.” 758

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