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.

Sunday, 7 April 2019

Chicago tops list of most dangerous cities for migrating birds

Date:  April 1, 2019
Source:  Cornell University
An estimated 600 million birds die from building collisions every year in the U.S., and research from the Cornell Lab of Ornithology offers one explanation for it.
A team led by Kyle Horton, a Rose postdoctoral fellow at the lab, ranked metropolitan areas where, due to a combination of light pollution and geography, birds are at the greatest risk of becoming attracted to and disoriented by lights and crashing into buildings.
Among their findings: While migration routes vary depending on the season, the same three large cities in the central U.S. -- Chicago, Houston and Dallas -- top both the spring and autumn lists of most dangerous for migrating birds.
"Those three cities are uniquely positioned in the heart of North America's most trafficked aerial corridors. This, in combination with being some of the largest cities in the U.S., makes them a serious threat to the passage of migrants, regardless of season," Horton said.
Research associate Andrew Farnsworth is senior author of "Bright Lights in the Big Cities: Migratory Birds' Exposure to Artificial Light," published April 1 in the journal Frontiers in Ecology and the Environment. The work combines satellite data showing light pollution levels with weather radar data measuring bird migration density.

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