Our directory of things of interest

University Directory

Storm birds

Storm birds Allison Mills
25 Jul
2015
The golden-winged warbler is elusive and can apparently predict severe storms. But science is catching up with the bird

‘This is one of the things that people in our field sit and talk and dream about, “Wouldn’t it be cool if someone caught one of these birds someday?’’,’ says Amber Roth, a researcher at the Michigan Technological University.

Roth and her fellow researchers finally caught a golden-winged warbler in Nicaragua’s Reserva el Jaguar. As warblers go, this was an unusual bird. It had already been caught and tagged in Illinois at the start of its migration to the south. ‘It’s a needle in the haystack for sure, especially for this species,’ adds Roth.

‘I saw a lot of golden-wings come through in the spring, but I had never caught one in Illinois,’ says James Marshall from Rockford University. Marshall tagged the warbler in Stevenson Dells, a shrubby ‘forest island’ environment that the warblers share with grouse and woodcocks.

Roth, meanwhile, attached a geolocator to the warbler, which allows the bird’s migration pattern to be tracked. Each year the warbler flies from the Great Lakes in the US to Central America.

Geolocators attached to warblers in previous experiments have revealed the bird appears to have an ability to detect incoming storms. When warblers arrived at a breeding ground in Cumberland, Tennessee it was for a short stay – the birds left almost immediately, and travelled around 900 miles in five days to avoid storms that produced major tornadoes.

‘The most curious finding is that the birds left long before the storm arrived,’ says Henry Streby from the University of California, Berkeley. ‘At the same time that meteorologists on The Weather Channel were telling us this storm was headed in our direction, the birds were apparently already packing their bags and evacuating the area.’ The warblers left the area 24 hours before the storm hit.

‘Meteorologists and physicists have known for decades that tornadic storms make very strong infrasound that can travel thousands of kilometres,’ says Streby.

image120839-horizA tagged warbler (Image: Allison Mills)

Birds with sensitive hearing on the same frequency as a storm have a clue that extreme weather is on the way. Warblers will even alter migration routes to avoid storms, which could increase their resilience to climate change.

‘Our observation suggests [that] birds aren’t just going to sit there and take it with regards to climate change, and maybe they will fare better than some have predicted,’ Streby says. ‘On the other hand, this behaviour presumably costs the birds some serious energy and time that hey should be spending on reproducing.’

Related items

NEVER MISS A STORY - Follow Geographical on Social

Want to stay up to date with breaking Geographical stories? Join the thousands following us on Twitter, Facebook and Instagram and stay informed about the world.

More articles in NATURE...

Nature

The field of bioremediation involves cleaning up toxic waste products…

Wildlife

A new analysis tots up the cost of invasive species…

Climate

It’s surprisingly difficult to know why trees die, but understanding…

Nature

By the late 1980s, almost all mature specimens of the…

Oceans

Scientists are discovering that narwhal tusks reveal a great deal about…

Climate

Climate change is bringing earlier, dangerous 'false springs', longer summers…

Wildlife

A victory for conservation, South Africa has announced plans to…

Energy

The UK has made little progress decarbonising heating, but a significant source…

Nature

The concept of 'natural capital', where the value of nature…

Geophoto

Prestigious photography competition returns for a fourth year

Climate

Founded in the USA by Denis Hayes, Earth Day became…

Geophoto

Tom Goldner's project Do Brumbies Dream in Red? is an intimate portrayal…

Wildlife

Not your usual tune: translating spider's silk into sound could…

Oceans

Millions of oysters have been rescued from the struggling shellfish…

Climate

History is littered with examples of fungi helping to digest…

Geophoto

The streets of Philadelphia are home to a small and forgotten…

Geophoto

When photographer Matthew Maran first snapped a fox he had…

Wildlife

Coloradans have voted to reintroduce grey wolves to the state