Upon reaching the breeding territory after migration, males begin to call repeatedly for many hours in order to attract a female. After selecting a male, females then choose a nest site (2). Nests are constructed on the ground from dead stems and leaves amongst patches of nettles (Urtica) or other tall vegetation. The female lays one to two eggs per day and the typical clutch size is eight to twelve eggs. The male leaves the female before egg laying is complete, and attempts to attract another female. Females generally produce a second brood by the beginning of July. During the breeding season corncrakes feed on invertebrates taken from plants or from the ground (3).