The Natural History of Selborne

During the severe winds it is not easy to say how the Hirundines subsist; for they withdraw themselves, & are hardly ever seen, nor do any insects appear for their support. That they can retire to rest, & sleep away these uncomfortable periods, as the bats do, is a matter to be suspected rather than proved: or do they not rather spend their time in deep & shelt’red vales near waters, where insects are more likely to be found? Certain it is, that hardly any individuals of this Genus have been seen for several days together.