The Triangle Area Bird Checklist is a weekly frequency list for all species reported in
Chatham, Durham, and Orange counties, NC, plus areas of Falls Lake in Granville and Wake Counties, from 1975-1/2008.
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Take a look at this cool graph, developed from the checklist.
Here's a map showing the Christmas Bird Count count circles for Chapel Hill, Durham, Falls Lake, Jordan Lake, and Wake County.
More information: Triangle area bird count schedule and contacts.
https://ebird.org/region/US-NC/hotspots
https://tbg.carolinanature.com/