As regular CFZ-watchers will know, for some time Corinna has been doing a column for Animals & Men and a regular segment on On The Track... particularly about out-of-place birds and rare vagrants. There seem to be more and more bird stories from all over the world hitting the news these days so, to make room for them all - and to give them all equal and worthy coverage - she has set up this new blog to cover all things feathery and Fortean.

Friday, 19 December 2014

Birds detect approaching storm from 900km away

Infrasound may have alerted warblers to the massive storm, prompting them to fly more than a thousand kilometres to avoid it

Ian Sample, science editor

Thursday 18 December 2014 17.00 GMT

A group of songbirds may have avoided a devastating storm by fleeing their US breeding grounds after detecting telltale infrasound waves.

Researchers noticed the behaviour after analysing trackers attached to the birds to study their migration patterns. They believe it is the first documented case of birds making detours to avoid destructive weather systems on the basis of infrasound.

The golden-winged warblers had just returned from South America to their breeding grounds in the mountains of Tennessee in 2013 when a massive storm was edging closer. Although the birds had just completed a migration of more than 2,500km, they still had the energy to evade the danger.

The storm, which spawned more than 80 tornadoes across the US and killed 35 people, was 900km away when the birds, apparently acting independently of one another, fled south, with one bird embarking on a 1,500km flight to Cuba before making the return trip once the storm had passed.

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