Actually, a group of heron nests is properly called a heronry. Originally
"rookery" was restricted to a colony of Rooks (a Eurasian crowlike bird),
but that term was extended to be used for nesting colonies of all sorts, so
it is perfectly correct. To me, it makes sense to call a spade a spade and
a heronry a heronry, but we "classicists" I think are in the minority.

Dennis Paulson, Director phone 206-756-3798
Slater Museum of Natural History fax 206-756-3352
University of Puget Sound e-mail dpaulson at ups.edu
Tacoma, WA 98416
web site: http://www.ups.edu/biology/museum/museum.html