Interesting! How did you find out about the bits that weren't included on the plaque, Ray?
Regarding the name Würdemann's Heron , The Audubon Sociiety Encyclopedia of North American Birds by John K. Terres is usually a pretty good source for origins and meanings of bird names, so I looked it up there and found this:
First, the reader is referred to the entry under Ward's Heron. The name Ward's Heron was given to that Great Blue Heron variant (on average paler and larger than the usual GBH) in 1882 by Robert Ridgway in honor of someone named Charles W. Ward, about whom no information is given.
Würdemann's Heron is a variant of Ward's Heron that has an entirely white head and crest. A man named Spencer F. Baird (would he be the Baird in the name Baird's Sandpiper? Yes!) described it in 1858 and considered it to be a distinct species. It was later thought to be a hybrid between Ward's Heron and the Great White Heron, but someone named Palmer in 1962 said it's merely a color morph of Ward's Heron that occurs usually only in extreme South Florida where Great White Herons also occur. The issue of species, subspecies and color morphs for the less common colors of Great Blues doesn't appear to be settled yet, according to this entry in Sibley's blog:
http://sibleyguides.blogspot.com/2007/11/great-white-heron-not-just-color-morph.html
As for Würdemann, Baird named that color bird for Gustavus Würdemann of the U. S. Coast and Geodetic Survey. Is that who's buried in the graveyard?
Betsy
" My heart in hiding
Stirred for a bird, -- the achieve of, the mastery of the thing!"
from "The Windhover" by Gerard Manley Hopkins