I could not find it on the Internet.
That seems to be derived from:
When it feeds, it appears as if immoveable, though continually on the wing; and sometimes, from what motives I know not, it will tear and lacerate flowers into a hundred pieces: for, I strange to tell, they are the most irascible of the feathered tribe. Where do passions find room in so diminutive a body? They often fight with the fury of lions, until one of the combatants falls a sacrifice and dies.
~ Letters from an American farmer, by J. Hector St. John de Crevecouer, reprinted from the original ed., with a prefatory note by W. P. Trent and an introduction by Ludwig Lewisohn. New York, Fox, Duffield, 1904.
In Studies in Classic American Literature
, Lawrence quotes Crevecoeur as asking, "Where do passions find room in so diminutive a body? They often fight with the fury of lions, until one of the combatants falls a sacrifice and dies." To which Lawrence wonders, "Lions no bigger than inkspots! . . . Birds are evidently no angels in America, or to the true American. He sees how they start and flash their wings like little devils, and stab each other with egoistic sharp bills." (p. 33/_Studies in Classic Am. Lit._/Penguin)
"When the army knows that their families and homes are at their backs, the will fight with the fury of dragons."
-- Master Suana
http://my.execpc.com/~tlmadden/games/l5 ... /floe.html