[PCA] NEWS: An Evolving Landscape

[Olivia Kwong]

http://www.telegram.com/article/20110613/NEWS/106139896/0/NEWS07

An evolving landscape
Modern naturalist notes changes since Thoreau's time
By Priyanka Dayal TELEGRAM & GAZETTE STAFF

In a murky pond in Concord, atop the looming dead trees, live the great 
blue herons.

Every spring, the majestic fish- and frog- eating creatures return to 
their nests in this colony -- one of the largest in Massachusetts.

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