When birds collide with high-speed rail

January 24, 2018, Plataforma SINC
When birds collide with high-speed rail
A common house martin (Delichon urbicum) shortly before being hit by a high-speed train. Credit: García de la Morena et al

If a high-speed train runs at 185 mph through small urbanized areas, it is possible that some animals will be surprised in their path, including magpies, pigeons, crows and buzzards. These collisions have not been scientifically analyzed or quantified to date. A new study now reports obtaining the first estimates in Spain.

The development of high-speed rail poses new ecological challenges. The thousands of kilometers of railways with trains operating at speeds of more than 155 mph can generate unwanted effects, such as the mortality of , a fact that until now had not been analyzed or quantified.

A study published in the journal Frontiers in Ecology and Evolution, has developed a new methodology to study the impact of high-speed trains on birds. For this purpose, a video system was installed in the cabins of locomotives during more than 8,700 miles of circulation at speeds of 155-185 mph.

"This has allowed us to obtain the first ever published estimate of bird mortality by and better understand the behaviors that condition the crash," says Juan Malo, author of the study and researcher at the Autonomous University of Madrid.

The researchers recorded 1,090 sightings of birds in front of a train cabin to better understand which ones are more at risk and why. They obtained much more precise data than was possible a few years ago.

Specifically, they calculated that a high-speed rail underway crosses birds in the vicinity of its frontal approximately every nine miles of travel, and runs over a bird every 225 miles. "On the Madrid-Levante line, on which the work has been carried out, some 60 birds per kilometer between Madrid and Motilla del Palancar, and 26 birds per kilometer on the stretch between Motilla del Palancar and Albacete, can be run over every year," Malo says.

What causes collisions?

According to the report, about a third of the rail crossings of the road occur below catenaries, which corresponds to birds that risk being run over. "In addition, more than 25 percent of the crossings in front of the train have birds that were perched on the ground, roads or cables of the infrastructure just before the train passes, as protagonists," says the researcher.

The video record also confirms that the birds generally react at a distance of 200 to 445 feet of the train, so the train´s speed leaves them little time to escape. "As a result, a small fraction of the birds that can be seen from the front of a train end up dying," he adds.

To reduce collisions with birds, the research team will seek methods to repel birds from infrastructure elements, and develop systems that decrease the frequency with which animals fly through the risk areas. The latter is a specific objective of the LIFE + Zero Impact project.

"The published data will serve to inform about the environmental impact assessments that are made in the future on the railway tracks to be built, and to guide the design of corrective measures," concludes Malo.

Explore further: Experience with vehicles does not help birds avoid collisions

More information: Eladio L. García de la Morena et al. On-Board Video Recording Unravels Bird Behavior and Mortality Produced by High-Speed Trains, Frontiers in Ecology and Evolution (2017). DOI: 10.3389/fevo.2017.00117

Related Stories

Experience with vehicles does not help birds avoid collisions

September 19, 2016

Researchers suspected that experience with passing vehicles may cause birds to adjust their avoidance responses-specifically, to increase their flight initiation distances-to keep from being hit. Instead, though, they recently ...

Peacock's train is not such a drag

September 17, 2014

The magnificent plumage of the peacock may not be quite the sacrifice to love that it appears to be, University of Leeds researchers have discovered.

Even modest oil exposure can harm coastal and marine birds

October 12, 2017

Many birds and other wildlife die following an oil spill, but there are also other potential long-terms effects of oil exposure on animals. In a recent Environmental Toxicology and Chemistry study that examined blood samples ...

Investigation reveals birds on roads adapt to speed limits

August 21, 2013

(Phys.org) —Two biologists from Canada working in France have found that birds that land on roads adapt to average highway speeds—the higher the speed limit, the sooner they take flight when a car approaches. In their ...

New 311mph maglev train in Japan passes initial tests

June 6, 2013

(Phys.org) —Engineers with Central Japan Railway Co. have put their newest maglev L0 train through initial testing and report the new high-speed train is on course for commercial deployment by 2027. The train will eventually ...

Recommended for you

Scientists ID another possible threat to orcas: pink salmon

January 19, 2019

Over the years, scientists have identified dams, pollution and vessel noise as causes of the troubling decline of the Pacific Northwest's resident killer whales. Now, they may have found a new and more surprising culprit: ...

Researchers come face to face with huge great white shark

January 18, 2019

Two shark researchers who came face to face with what could be one of the largest great whites ever recorded are using their encounter as an opportunity to push for legislation that would protect sharks in Hawaii.


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.