Above An American Bittern in camouflage stance in the Myaka River State Park, Florida, as photographed by Sabine Rodens (2006), from Wikipedia Commons.
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Frederick C. Gould, "Camouflage" in The Sydney Stock and Station Journal [quoted from The Westminster Gazette] on Friday, April 11, 1919, p. 2—
The Bittern took Camouflage lessons,
For he wanted to look like a stick,
And a Futurist artist in khaki
Taught him the vanishing trick;
He painted his feathers with markings,
And drilled him to stand like a log,
Till he looked not a bit like a Bittern
But just like a bit of the Bog.