"...So Boar and Sow..." —

Almah. So two kind turtles, when a storm is nigh
Look up, and see it gath'ring in the Skie.
Each calls his mate to shelter in the Groves,
Leaving, in murmurs, their unfinish'd Loves.
Perch'd on some dropping Branch they sit alone,
And Cooe, and hearken to each others moan.

John Dryden, The Conquest of Granada. Part. II., Act. i. Sc. ii., p.82. Ed. 1672. (Vgl. Arber, p. 42.)