U.S. Geological Survey Home Page USGS Patuxent Wildlife Research Center Science Meetings; dedicated to Chandler S. Robbins USGS Patuxent Wildlife Research Center; Science Meetings dedicated to Chandler S. Robbins Dedicated to Chan Robbins USGS Patuxent Wildlife Research Center; Science Meetings dedicated to Chandler S. Robbins Poster Abstracts from USGS Patuxent Wildlife Research Science Meetings, October, 2006
Patuxent Science Meeting 2006 Poster Abstract

Assessing Patterns of Nocturnal Bird Migration in the Appalachian Region

Dawson DK, Jones T (FWS), Mabey S (NCSU), Mizrahi D (NJ AS)

Concerns have arisen about the potential impacts of wind power development in the

Appalachians on migrating birds and bats, creating a critical need for information on their

distribution and flight characteristics as they pass through the region. We are studying the

spatiotemporal distribution and flight patterns of birds and bats that migrate nocturnally.

Weather surveillance radar (NEXRAD) data are being analyzed to provide a broad view of spring

and fall migration through the Appalachians, and to assess the response of migrants to

mountain ridges or other prominent landforms. We also are conducting acoustic monitoring at

sites scattered through the central Appalachians, recording the flight calls made by migrating

birds to index their abundance and species composition at different locations. The acoustic

monitoring is supplemented with portable radar sampling at three sites, to provide additional

data on migrant passage rates, as well as their flight altitudes and directions. These data will be

used to model the effects of topography, weather, and other variables on migrant abundance

Friday, September 22, 2006



Return to Posters page