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CANBERRA Steven Nelson Jersey , Nov. 10 (Xinhua) -- A common species of Australian pigeon uses the sound of its feathers to warn of impending danger, a local study has found.


Researchers from the Australian National University (ANU) found that rather than using vocals, the crested pigeon uses a high-pitched sound produced by its main flight feathers to warn fellow pigeons of predators.


As the pigeon flaps faster to escape danger, the tempo of the alarm signal automatically increases.


Trevor Murray, an animal communication expert from ANU, said on Friday that the team is able to prove that other crested pigeons flee when they hear the warning Armani Watts Jersey , proving it is used specifically as an alarm rather than a by-product of flight.


"Crested pigeons signal danger with noisy wings, not voices," Murray said in an ANU media release.


"It shows that birds really can use their feathers as 'musical instruments' to communicate with others."


In order to prove that the pigeon's whistling feather was an alarm system, researchers used high-speed video and conducted feather-removal studies.


They found that the bird's eighth primary wing feather was responsible for the high-pitched notes with each downstroke.


It was also discovered that the ninth feather produces a low-pitched sound that it was not involved in the alarm.


Researchers played flight sounds of crested pigeons with and without their eighth feather to a flock of other pigeons.


"We show that the crested pigeon produces an acoustic alarm signal with its wings and that it is an intrinsically reliable signal of danger," Murray said.


"The alarm signal is intrinsically reliable because pigeons flap faster to escape predators, and this fast flapping automatically produces the high-tempo alarm signal."




HANGZHOU Dorian O'Daniel Jersey , Jan. 17 (Xinhua) -- Alibaba plans to pay two elderly employees an annual salary between 350,000 yuan (54,000 U.S. dollars) and 400,000 to work for its e-commerce platform Taobao.


According to a job ad released on its official website Tuesday, Taobao wants to hire two "product experiencers" over the age of 60 to help the company collect user experiences on its new customized shopping platform.


Alibaba said applicants should have an easy rapport with children, have stable groups of friends and have good communication skills.


Apart from that Derrick Nnadi Jersey , they must have at least one year of online shopping experience. Being a "group influencer," such as the leader of a square dancing team or a member of a neighborhood committee, is also a plus, according to the company.


Alibaba said the company has seen a massive response and is now short-listing candidates for interviews.


Analysts said Alibaba's move reflects the growing role of the elderly in China's burgeoning online shopping market.


Alibaba's Tmall online marketplace has 30 million registered elderly users, who prefer electronic products and home appliances over other product categories.


According to a survey of nearly 10,000 people aged 50 and older Chris Conley Jersey , about 90 percent said they were willing to learn new things, such as online shopping and how to use mobile payment.


At the end of 2016, China had 230 million people aged 60 and older.



Within the current football trends, trainers, sport writers and fans (and myself in my own small way) do a “new sport”, i.e. they like to compare the best performance of the greatest football champions. Until some time ago Mitch Morse Jersey , in comparison to champions, Ronaldo and Messi were utilized as a touchstone, while today football fans exercise both their imagination and critical acumen on two international football stars, i.e. Neymar and Bale. I wish to start by saying that all trainers, sport writers or simple fans who desires to engage in a confrontation between Bale and Neymar face considerable difficulties, because they are two authentic “titans” on football.

The sectorial statistics (games played Chris Jones Jersey , goals, assists) help us in our opinion about individual players’ performance, but the final opinions (at least my own opinion) go beyond mere statistics and description of the data. And since statistic has its own important impact, I'll start with them first. And I first observe that both Neymar and Bale reported a high incidence of injuries during the present football season (2013-2014).

Neymar was outside with other team members for a couple of weeks, while Bale had suffered leg muscle strains. However, after their return to their respective teams Kareem Hunt Jersey , the statistic provides the following information for each footballer:

1. Neymar played for Barcelona 29 games with 12 goals and 11 assists.
2. Bale played for Madrid 27 games, with 14 goals and 10 assists.
3. Neymar scored 72 goals in the Spanish league and UCL, while Bale has scored 65 goals within the same competitions.
4. Neymar’s average for the last months is about 16.6 percent, whilst Bale’s average is about 21.5 percent.

In conclusion, we can say that the statistic shows that Bale enjoyed a slight advantage over Neymar, who however is three years younger than his “rival.”

BEYOND THE STATISTICS

Statistics might say “something” about both of them Tanoh Kpassagnon Jersey , but not every thing is satisfactory. For example, statistics don't tell us that Neymar and Bale are quite different in physical constitution (while their style reaches high levels of overall performance). Neymar is agile as a leopard, and has developed a formidable dribbling, ball control and speed.

Bale is of strong build and is really a extremely powerful wing forward, equipped with exceptional speed, dribbling and ball control. From the strictly physical standpoint Patrick Mahomes II Jersey , I'd say that they are “NOT COMPARABLE” to one another. Instead, from a stylistic standpoint, each Bale and Neymar are at the &. Wholesale Jerseys Wholesale Jerseys China Wholesale Shirts Cheap Hoddies Cheap NBA Jerseys China Cheap Hoddies Cheap College Shirts Cheap Soccer Jerseys China Cheap Adidas NHL T-shirts Cheap Nike NFL Hats