Lucky break documents warbler tornado warning

Birds fitted with data loggers for other reasons fled early from April’s killer storm

Tiny golden-wing warblers

LITTLE WARBLER THAT COULD  Tiny golden-wing warblers happened to be wearing experimental data collection devices that confirmed they had early warnings of a coming storm.

Gunnar Kramer

A freak of luck has let researchers document warblers fleeing their territories before temperatures, air pressure or other obvious weather signs foretold the arrival of a tornado-spawning storm.