From BBC:
Birds 'heard tornadoes coming' and fled one day ahead
US scientists say tracking data shows that five golden-winged warblers "evacuated" their nesting site one day before the April 2014 tornado outbreak.
Geolocators showed the birds left the Appalachians and flew 700km (400 miles) south to the Gulf of Mexico.
The next day, devastating storms swept across the south and central US.
Writing in the journal Current Biology, ecologists suggest these birds - and others - may sense such extreme events with their keen low-frequency hearing.
Remarkably, the warblers had completed their seasonal migration just days earlier, settling down to nest after a 5,000km (3,100 mile) journey from Colombia.
A bit more:
After disappearing to Colombia for the winter, 10 of the tagged warblers returned in April 2014. The team was in the field observing them when they received advance warning of the tornadoes.
"We evacuated ourselves to the waffle house in Caryville, Tennessee, for the one day that the storm was really bad," Dr Streby said.
Elsewhere in the US the storm had more drastic consequences. At least 84 tornadoes caused 35 fatalities and more than $1bn (£0.6bn) in property damage.
After the storm had blown over, the team recaptured five of the warblers and removed the geolocators.
These are tiny devices weighing about half a gram, which measure light levels. Based on the timing and length of the days they record, these gadgets allow scientists to calculate and track the approximate location of migratory birds.
In this case, all five indicated that the birds had taken unprecedented evasive action, beginning one to two days ahead of the storm's arrival.
"The warblers in our study flew at least 1,500km (932 miles) in total," Dr Streby said.
They escaped just south of the tornadoes' path - and then went straight home again. By 2 May, all five were back in their nesting area.
Amazing behaviour - to sense an impending storm and to fly over 900 miles to avoid it.
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