Gilbert White,
The Natural History of Selborne…
“ Avenues, and long walks, under hedges, and pasture-fields, and mown meadows where cattle graze, are her delight, especially if there are trees interspersed; because in such spots insects most abound. When a fly is taken a smart snap from her bill is heard, resembling the noise at the shutting of a watch-case: but the motion of the mandibles is too quick for the eye.The swallow, probably the male bird, is the excubitor to house-martins, and other little birds, announcing the approach of birds of prey. ”
