41Dunraven, Earl of. Notes on Irish Architecture, Volume 1. London: George Bell & Sons, 1875. 36.
Stokes (Dunraven's editor) credits "Mr. W. M. Hennessy for the folk belief about birds, "found by him in a MS account by Thaddeus Moynihan, furnished to Edward Llhwyd.""
Smith reports the same folk belief derisively: "...but this seems to be the remains of some monkish legend; and many others of the fame kind are related of this place, with an account of which, I will not tire the reader's patience.