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are said not to fly away, but " merely to stick out their
feathers and scream/' The Barn-owl, when approached
" instantly swells out its plumage, extends its wings and
tail, hisses and clacks its mandibles with force and rapid-
ity." 14 So do other kinds of owls. Hawks, as I am

FIG. 12.—Hen driving away a dog from her chickens.
Drawn from life by Mr. Wood.

informed by Mr. Jenner Weir, likewise ruffle their feath-
ers, and spread out their wings and tail under similar
circumstances. Some kinds of parrots erect their feath-
ers; and I have seen tliis action in the Cassowary, when
angered at the sight of an Ant-eater. Young cuckoos
in the nest, raise their feathers, open their mouths
widely, and make themselves as frightful as possible.

14 On the Strix ftammea, Audubon, ' Ornithological Bi-
ography,' 1864, vol. ii. p. 407. I have observed other cases
in the Zoological Gardens.