Tracking Tag

New Field Could Explain How Salmon, Turtles, Find Home

Publication: National Geographic News   Date: December 4, 2008   View Article

Sea turtles and salmon may use their sensitivity to Earth’s magnetic field to guide them home at the end of their epic coming-of-age journeys, suggest scientists aiming to solve one of nature’s enduring mysteries.

The newly proposed theory is one of several ideas being explored under the banner of an emerging scientific field dubbed movement ecology.

Tiny Radio Tags Offer Rare Glimpse into Bees’ Universe

Publication: National Geographic magazine   Date: November 14, 2008   View Article

A National Geographic grantee is pioneering the use of supersmall radio tracking tags that fit on the backs of bees, a technological breakthrough that may provide him and other scientists with a direct view of the pollinators’ flight patterns.

NASA Tool Helps Track Whale Sharks, Polar Bears

Publication: National Geographic News   Date: August 25, 2008   View Article

Photos of giant whale sharks snapped by vacationing scuba divers and snorkelers are helping scientists track the elusive marine creatures across the oceans.

And the same technique may soon also help researchers track polar bears in Canada, giant Eurasian trout in Mongolia, and ocean sunfish in the Galápagos Islands.

Eight epic animal treks

Publication:   Date: April 3, 2008   View Article

Some animals will travel the Earth for a good meal, others for a hot mating date or to escape the cold. Learn about eight of these epic journeys.

Longest Animal Migration Measured, Bird Flies 40,000 Miles a Year

Publication: National Geographic News   Date: August 8, 2006   View Article

Sooty shearwaters migrate nearly 40,000 miles (64,000 kilometers) a year, flying from New Zealand to the North Pacific Ocean every summer in search of food, according to a new study.

The extensive summer trek is the longest animal migration ever recorded electronically.

African Elephants Avoid Hills, Satellite Tracking Shows

Publication: National Geographic News   Date: August 3, 2006   View Article

African savannah elephants avoid traipsing up hills, even if the hills have an abundance of food, according to a study that tracked the animals’ movements over several years.

Scientists believe climbing hills costs elephants too much energy.

The finding suggests that conservationists must consider topography as they develop plans to protect elephants, said Fritz Vollrath, a zoologist at England’s University of Oxford.

Dragonfly Migration Tracked With Tiny Radio Tags

Publication: National Geographic News   Date: October 12, 2005   View Article

Dragonflies fitted with tiny radio transmitters may aid scientists’ efforts to track where the insects buzz off to on their southward migrations. The results should shed light on this little-studied behavior, according to the project leaders.

“We don’t know where they go or, to be honest, why they do it,” said Michael May, a dragonfly expert at Rutgers University in New Brunswick, New Jersey.

© 2008-2010 Collected Writings By John Roach