Dec 23, 2014 01:33 AM
http://www.theguardian.com/science/2014/...d-warblers
EXCERPT: A group of songbirds may have avoided a devastating storm by fleeing their US breeding grounds after detecting telltale infrasound waves.
[...] “We looked at barometric pressure, wind speeds on the ground and at low elevations, and the precipitation, but none of these things that typically trigger birds to move had changed,” said David Andersen at the University of Minnesota.
“What we’re left with is something that allows them to detect a storm from a long distance, and the one thing that seems to be the most obvious is infrasound from tornadoes, which travels through the ground.”...
EXCERPT: A group of songbirds may have avoided a devastating storm by fleeing their US breeding grounds after detecting telltale infrasound waves.
[...] “We looked at barometric pressure, wind speeds on the ground and at low elevations, and the precipitation, but none of these things that typically trigger birds to move had changed,” said David Andersen at the University of Minnesota.
“What we’re left with is something that allows them to detect a storm from a long distance, and the one thing that seems to be the most obvious is infrasound from tornadoes, which travels through the ground.”...