Archive for Birds

EARTH OVERSHOOT DAY 2016, EARLIER THAN EVER

Posted in 2016 with tags , , , , , , , , , , on August 4, 2016 by theboldcorsicanflame

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On August 8th 2016, humanity will have used up nature’s budget for the entire year according to the Global Footprint Network, an international sustainability think tank led by Club of Rome memberMathis Wackernagel.

Since 1970, Earth Overshoot Day has been changing date with a general tendency to come earlier in the year, this year will be a record though.

But there is some good news too and plenty of opportunities to act for reducing humanity’s ecological footprint.

#Pledgefortheplanet and read more about overshoot day and what you can do about it here:

http://www.overshootday.org/

 

All Of A Sudden, Fish Are Dying By The MILLIONS All Over The Planet

Posted in 2016, animals with tags , , , , , , on July 28, 2016 by theboldcorsicanflame

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Why are millions upon millions of dead sea creatures suddenly washing up on beaches all over the world?  It is certainly not unusual for fish and other inhabitants of our oceans to die.  This happens all the time.

But over the past month we have seen a series of extremely alarming mass death incidents all over the planet.  As you will see below, many of these mass death incidents have involved more than 30 tons of fish.

In places such as Chile and Vietnam, it has already gotten to the level where it has started to become a major national crisis.  People see their coastlines absolutely buried in dead sea creatures, and they are starting to freak out.

For example, just check out what is going on in Chile right now.  The following comes from a Smithsonian Magazine article entitled “Why Are Chilean Beaches Covered With Dead Animals?“…

TO BE CONTINUED ON

All Of A Sudden, Fish Are Dying By The MILLIONS All Over The Planet

 

25 Million Birds Are Illegally Killed in the Mediterranean Every Year

Posted in 2016, animals with tags , , on March 13, 2016 by theboldcorsicanflame

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A European turtledove, whose numbers are plummeting across the Mediterranean. (Photo: Valery Hache/AFP/Getty Images)

Researchers find that the animals are being shot and trapped for food and the pet trade, with the majority of the deaths occurring at just 20 sites.

A new study finds that an estimated 25 million migrating birds are killed as they fly over Mediterranean countries each year. The deaths—by gun, net, or glue-covered traps—include several threatened species. Most of the birds end up being eaten as delicacies. Some are shot for sport, while others are captured alive and sold in the caged-bird trade.

To Be Continued on

http://www.takepart.com/article/2016/03/10/25-million-birds-are-illegally-killed-mediterranean-every-year

New research shows that the very same physical mechanisms are at play when a Bird sings and a Human speak

Posted in 2015, animals with tags , , , on December 1, 2015 by theboldcorsicanflame

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 When birds and humans sing it sounds completely different, but now new research reported in the journalNature Communications shows that the very same physical mechanisms are at play when a bird sings and a human speaks.

Birds and humans look different, sound different and evolved completely different organs for voice production. But now new research published in Nature Communications reveals that humans and birds use the exact same physical mechanism to make their vocal cords move and thus produce sound.

“Science has known for over 60 years that this mechanism – called the myoelastic-aerodynamic theory, or in short the MEAD mechanism- drives speech and singing in humans. We have now shown that birds use the exact same mechanism to make vocalizations. MEAD might even turn out to be a widespread mechanism in all land-dwelling vertebrates”, says lead author of the paper, Associate Professor Dr. Coen Elemans, Department of Biology, University of Southern Denmark. Co-authors of the paper are from Emory University, Max Planck Institute for Ornithology and Palacky University.

Over the last year Dr. Elemans and his colleagues studied six different species of bird from five avian groups. The smallest species, the zebra finch, weighs just 15 grams, and the largest one, the ostrich, weighs in at 200 kg. All studied birds were revealed to use the MEAD mechanism, just as humans do.

In the human voice box, or larynx, air from the lungs is pushed past the vocal cords, which then start moving back and forth sideways like a flag fluttering in the wind. With each oscillation the larynx closes and opens, making the airflow stop and start, which creates sound pulses. “Such vocal fold oscillations occur from about 100 times/sec in normal speech to one of the highest possible notes sung in opera at about 1400 times/sec, a F6 in Mozart’s “Die Zauberflöte”, adds voice expert and co-author Dr. Jan Švec of Palacky University in the Czech Republic.
To be Continued on

http://www.sott.net/article/307445-Birds-and-humans-Same-physical-mechanism-for-singing-talking

 

That’s what it looks like when Birds get prepared!

Posted in 2015, animals with tags , , , on May 8, 2015 by theboldcorsicanflame

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You cannot tell birds what they cannot do!

Posted in 2014, animals with tags , on December 30, 2014 by theboldcorsicanflame

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The hummingbird migrates 3,500 miles away and live five times longer than thought

Posted in 2014, animals with tags , , , on November 10, 2014 by theboldcorsicanflame

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>Ornithologists in the US say hummingbirds can live longer than 10 years

They have been tagging the birds for a decade to study their habits

Experiment has revealed that one bird flew 3,500 miles (5,630km) for winter

Hummingbirds have been found wintering in relatively cool areas below 18°C

Thousands of birds have been ‘banded’ and experts hope to learn about whether they migrate in one go, or stop off along the way

HOVERING HUMMINGBIRDS

Hummingbirds are the only birds to hover in the air by relying on their strength alone.

In August, scientists found that it is the ratio of the bird’s wing length to its width that makes them so efficient.

The discovery is helping experts compete with 42 million years of natural selection to build helicopters that are increasingly efficient, which could match the performance of the best hummingbird.

David Lentink, an assistant professor of mechanical engineering at Stanford University in California, tested wings from 12 different species of hummingbirds, which he sourced from museums.

He positioned them on a machine used to test the aerodynamics of helicopter blades – so they spun around like man-made blades.

Together with his team, he used cameras to capture airflow around the wings and measured the drag and the lift force they exerted at different speeds and angles.

Professor Lentink’s team used the same machine to test the rotor blades from a ProxDynamics Black Hornet autonomous micro helicopter, which is one of the most efficient on the market and is used by the UK’s army in Afghanistan.

They found that the micro-helicopter’s blades are as efficient at hovering as the average hummingbird.

But while the micro-copter’s blades kept pace with the middle-of-the-pack hummingbird wings, they could not keep up with the most efficient hummingbird’s wing.

The wings of Anna’s hummingbird – a species common throughout the West Coast of the U.S. – were found to be about 27 per cent more efficient than the man-made micro-copter blades.

 

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