Sources of data:
USGS’s Breeding Bird Survey
Cornell Lab of Ornithology’s ebird
USGS’s National Map Land Cover
TIGER shapefiles
University sites:
The Master of Geospatial Information Science and Technology (MGIST) program
NCSU Libraries Geospatial (GIS) Data Services
NCSU Center for Geospatial Analytics
Other interesting sites:
International Cartographic Association
GeoNet: the Esri Community