Swann, H. K. (1968). A dictionary of English and folk-names of British birds: With their history, meaning, and first usage, and the folk-lore, weather-lore, legends, etc., relating to the more familiar species. Gale Research Co..

Swann, H. Kirke. A Dictionary of English and Folk-names of British Birds: With Their History, Meaning, and First Usage, and the Folk-lore, Weather-lore, Legends, Etc., Relating to the More Familiar Species. Detroit: Gale Research Co., 1968.

Swann, H. Kirke. A Dictionary of English and Folk-names of British Birds: With Their History, Meaning, and First Usage, and the Folk-lore, Weather-lore, Legends, Etc., Relating to the More Familiar Species. Gale Research Co., 1968.