Note 4 — Chapter VIII · DUCK—GOOSE—PEACOCK—TURKEY—GUINEA-FOWL—CANARY-BIRD—GOLD-FISH—RIVER-BEES—SILK-MOTHS.
Reading edition
F. Cuvier, in ‘Annales du Muséum,’ tom. ix. p. 128, says that moulting and incubation alone stops these ducks laying. Mr. B. P. Brent makes a similar remark in the ‘Poultry Chronicle,’ 1855, vol. iii. p. 512.