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Atlas data for Geographic Information Systems (GIS) Files are Windows zip archives, of the following types: Shapefiles, created in ESRI's ArcGIS 9.x, but also readable in free GIS, e.g. Quantum GIS or uDig KML files, for use in Google Earth, a freely downloadable desktop mapping tool. Layer name Shapefile KML/KMZ file Last updated Atlas spatial data Atlas blocks, published atlases blocks_shp.zip (5.14 MB .shp) blocks_kml.zip (pub. & current) (8.3 MB .kml) Aug 2007 Atlas blocks, current atlases cur_blocks_shp.zip (3.0 MB .shp) blocks_kml.zip (published and current) (8.3 MB .kml) Aug 2007 Atlas Topo quads/larger block units quads_shp.zip (published) (2.85 MB .shp) quads_kml.zip (published) (2.5 MB .kml) Aug 2007 Atlas status/details for U.S. & Canadian atlases atlas_projects_shp.zip (4.56 MB .shp) Atlas Projects (343 KB .kml) Aug 2007 Atlas breeding evidence data The core atlas data (the breeding evidence by block) is available for any archived atlas by email request; it is provided separately from GIS layers but is ready to JOIN to layers. various Base Layers NABCI Bird Conservation Regions bcr_shp.zip (5.4 MB .shp) bcr_kml.zip (3.4 MB .kml) Aug 2007 Partners in Flight Physio Regions pif_shp.zip (872 KB .shp) pif_kml.zip (595 KB .kml) Aug 2007 Explanations:  •Current blocks refers to atlas projects that are currently being conducted & are managed in BBA Explorer  •Published blocks refers to atlases that have been completed and published & are archived in BBA Explorer  •The projection of all files is Geographic North American Datum 1983

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