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Distribution: During the breeding season, they’re most common northwards from the Northumberland coast and off the west coast of Scotland. During the winter, their range expands to include areas along the east and south coasts, parts of the southwest coast and some areas of the Welsh coast. Gupta J, Singh A, Churchil RR, Singh BP, Sharma D (2005) Genetic divergence between red jungle fowl and other domesticated poultry species using 12S rRNA gene polymorphism. Indian J Anim Genet Breed 26(1–2):26–30 Cheng YS (1995) Sélection de la race Tsaiya Brune sur la ponte et la durée de la fertilité en croisement avec le canard de Barbarie. Thèse. Institut National Polytechnique de Toulouse, France Carefoot WC (1996) Chocolate: a sex-linked recessive plumage colour mutant of the domestic fowl. Br Poult Sci 37:867–868 Lin RL, Chen HP, Rouvier R, Marie-Etancelin C (2016) Genetic parameters of body weight egg production and shell quality traits. Poult Sci 95:2514–2519Gordh G, Beardsley JW (1999) Taxonomy and biological control. In: Bellows TS, Fisher TW (eds) Handbook of biological control: principles and applications of biological control. Academic Press, Amsterdam, pp 45–55. isbn 978-0-12-257305-7 Despite their apparently docile nature, mallards are fascinating to observe. Their prenuptials are often quite aggressive and can involve several males chasing and forcing themselves upon a female. These are usually males that have missed out on pairing up the conventional way and instead choose to hang out in bachelor gangs. Distribution: Mainly found in the Midlands, south-east of England, parts of Scotland’s east coast, eastern Northern Ireland and along the south and north coasts of Wales. Their range expands during winter to include Cornwall and North Devon, parts of Scotland’s west coast and larger areas of Northern Ireland. Guy G, Rousselot-Pailley D, Rouvier R (1998) Description de la croissance de canettes mulardes. Ann Zootech 45:303–310

Distribution: Present in almost all coastal areas in the UK year-round, as well as some inland waters such as reservoirs. Cheng YS, Rouvier R, Poivey JP, Tai C (1996) Prediction of genetic gains in body weight, egg production and shell quality traits in the laying Brown Tsaiya ( Anas platyrhynchos). Genet Sel Evol 28:443–455 Singh A, Gupta J, Churchil RR, Sharma D, Singh RV (2005) Genetic relatedness between red jungle fowl and other poultry species for BLB2 gene. Indian J Anim Genet Breed 26(1–2):18–20Cracraft J, Barker FK, Braun MJ, Harshman J, Dyke G, Feinstein J, Stanley S, Cibois A, Schikler P, Beresford P, García-Moreno J, Sorenson MD, Yuri T, Mindell DP (2004) Phylogenetic relationships among modern birds (neornithes): toward an avian tree of life. In: Cracraft J, Donoghue MJ (eds) Assembling the tree of life. Oxford University Press, New York, pp 468–489