Yellow necked mouse (Apodemus flavicollis)
	Description	Fur brown with a white belly, yellow/brown collar around neck and upper chest, large ears, protruding eyes and long tail. Head and body length 95-120mm, weight 14-45g, males are larger than females.
	Life cycle	Males live separate from females. In winter male homeranges are slightly larger than those of females and reflect the higher food requirements of the heavier males. During the breeding season from February to October male homeranges increase to 2-3 times those of females as males search for non-pregnant females. Between 2-11 young are born in a litter. Most mice do not survive more than a year. They are mainly nocturnal.
	Habitat	Mature deciduous woodland, but will use mature hedgerows and scrubland. Live in a multi entrance burrow system, but are good climbers and forage in trees.
	Diet	Tree seeds, fruits, greenplants and invertebrates.
	Status
	Reserve	A census in 1998 found large breeding populations at the eastern end of the reserve and very few individuals at the centre or western end. A study in 2001 found no yellow-necked mice. To see a summary of the report for this study click here:
	Britain	Pre-breeding population estimated at 750,000, declining in abundance and range due to habitat loss.