A characterization of autumn nocturnal migration detected by weather surveillance radars in the northeastern USA.

  title={A characterization of autumn nocturnal migration detected by weather surveillance radars in the northeastern USA.},
  author={Andrew Farnsworth and Benjamin M. Van Doren and Wesley M. Hochachka and Daniel Sheldon and Kevin Winner and Jed Irvine and Jeffrey Geevarghese and Steve Kelling},
  journal={Ecological applications : a publication of the Ecological Society of America},
  volume={26 3},
Billions of birds migrate at night over North America each year. However, few studies have described the phenology of these movements, such as magnitudes, directions, and speeds, for more than one migration season and at regional scales. In this study, we characterize density, direction, and speed of nocturnally migrating birds using data from 13 weather surveillance radars in the autumns of 2010 and 2011 in the northeastern USA. After screening radar data to remove precipitation, we applied a… 

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