It's worth while keeping track of unexpected birds seen in your locality
in summer. Their presence may be explained in various ways.
James Muller has been posting on what is an all-but-confirmed nest of
herring gulls here in Columbus, for example, and I saw a high-plumaged
Caspian tern over Hoover Reservoir here yesterday. There are quite a few
species once thought absent here that have proved to be at least
present, or even nesting, with more careful observations. Lots of
factors--habitat destruction/restoration and climate change to mention
only two--affect bird distributions, and they are worth keeping track
of.  Lots of observers report first sightings of birds each year, but
not so many look for them later....
Bill Whan
Columbus

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