The eggs that I possess are all of one type-rather elongated ovals with scarcely any gloss, and strongly recalling in shape, size, and appearance densely marked varieties of the eggs of hirundo rustica, but with the markings rather browner and slightly more smudgy.
"The Nests and Eggs of Indian Birds, Volume 1"
Allan O. Hume
543. The Martin, or House Martin, hirundo urbica, Y. ii.
"Early English Meals and Manners"
Various
Not that Scopoli is so circumstantial and attentive to the life and conversation of his birds as I could wish: he advances some false facts; as when he says of the hirundo urbica that 'pullos extra nidum non nutrit.
"The-Natural-History-of-Selborne"
White, Gilbert