has been written concerning the drumming of the Common Snipe (Capella g, gaUittago), and the fact that it is caused by the Vibration of the outer pair of tail-feathers, accompanied by the quivering of the wings, has long been well known; the aerodynamics of the phenomenon do not, however, appear to have been described. The Handbook of British Birds, Vol. iv, p. 199 gives an account of an experimen...

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