Lesser redpolls are small finches that specialise in birch and alder seeds. Their welfare depends on maintaining birch woodland and garden feeders in winter irruption years.
Lesser redpoll welfare in winter depends on birch and alder seed availability along their nomadic feeding routes. When seed crops fail across their range, they move to find food including garden feeders. Maintaining birch woodland, garden birch trees, and nyjer seed feeders provides welfare support during food-scarce winters. Their breeding welfare is supported by maintaining young birch and willow scrub habitats through sympathetic woodland management that retains early successional stages alongside mature woodland.