A Black velvet hood was placed over the head of a pigeon and tied round the neck with a piece of cotton, sufficiently tight to prevent the bird removing it with its claws, which it at once attempted to do. Presently some movements of progression were made along the floor, which seemed to suggest that disturbances of equilibration had supervened ; then the bird rapidly became quiescent and assumed a peculiar and unusual position, in which the head was bent over until the crown rested upon its back, with the tip of the beak pointing towards the tail.

Copyright © 1927 The Company of Biologists Ltd.
1927
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