Lesser Redpoll Welfare in Birch and Alder Woodland

The lesser redpoll is a small finch dependent on birch and alder seed crops, with populations that fluctuate dramatically with seed availability.

Key Facts

Lesser redpoll populations have declined by over 80 percent in the UK since 1982
Species feeds primarily on birch and alder seeds, irrupting when crops fail elsewhere
Breeds in birch scrub and heather moorland edges
Populations show dramatic annual fluctuations linked to seed crop success
Related species including mealy redpoll and common redpoll show different population trends

Welfare Considerations

Lesser redpoll welfare is closely tied to the availability of birch and alder seed crops, which vary enormously between years. Years with poor seed crops cause irruptive movements and increased mortality from starvation. Loss of birch scrub through development and succession to denser woodland reduces breeding habitat. Garden nyger seed feeders are used by redpolls during winter and can supplement natural seed availability. Climate change is affecting seed crop phenology and may cause temporal mismatch between peak seed availability and bird requirements. Maintaining birch and alder scrub habitat in upland and lowland settings benefits lesser redpolls and associated woodland biodiversity.

What You Can Do

Provide nyger seed feeders in gardens during autumn and winter to support redpolls
Support management of birch and alder scrub in upland conservation areas
Record lesser redpoll garden visits for BTO Garden BirdWatch monitoring
Advocate for habitat management that includes scrub retention in nature reserve management plans