Lesser redpolls will pair up for breeding in late winter, forming loose colonies of several nest sites. Females will take charge of nest building, constructing a cup-shaped nest that consists of an outer layer of twigs and plant stems; an inner layer of roots, grass and moss; and a lining of feathers, wool and hair. She will lay 4-6 pale eggs that have rust coloured blotches and streaks. She will incubate these for 10-12 days while being fed by the male. The young then have fledgling period of 11-14 days and are fed by both parents during this time. Parents can raise 2 broods a year.