Bird observatories: what are they, where are they?
One definition (from Wikipedia): A bird observatory is a center for the study of bird migration and bird populations.
They are usually focused on local birds, but may also include interest
in far flung areas. Most bird observatories are small operations with a
limited staff, many volunteers and a not-for-profit educational status.
Many bird observatories conduct bird banding.
A reference: in the journal Climate Research Vol. 35: 59– 77, 200
Characterizing bird migration phenology using data from standardized monitoring at bird observatories
A list of observatories: http://www.nmnh.si.edu/BIRDNET/ornith/observatory.html