Isidore of Seville [7th century CE] (Etymologies, Book 12, 7:): The wood-pigeon [palumbes, from pabulum, ‘food’] is called a ‘chaste bird’ [avis casta] from its behavior, because it is a companion of chastity [castitas], for it is said to proceed alone after it has lost its mate, nor does it need any further carnal union. - [Barney, Lewis, et. al. translation]

Jacques de Vitry [ca. 1220 CE] (Historia Hierosolymitana, Chapter 92): The wood-dove belongs to the dove family; Deprived of his mate, he remains alone, no longer yearning for the repose of verdant foliage, no longer seeking to satisfy the pleasures of love elsewhere. - [Machine-assisted translation based on Donnadieu]

Vincent de Beauvais [circa 1190-1264 CE] (Speculum naturale, Book 16.118): The Palumbes is the species of pigeon, which is commonly called a branch dove [i.e. wood-dove], because it is accustomed to perch on the branches of trees and nest there. - [Badke translation/paraphrase]