Wild Song Thrush Welfare and Decline

Song thrush populations have declined significantly due to changes in farmland and garden management affecting their snail and earthworm prey.

Key Facts

UK song thrush populations have declined by over 50% since the 1970s
Song thrushes are specialist snail hunters using stones as anvils to break shells
Gardens with ponds and log piles support higher song thrush territories
Slug pellet use reduces snail prey and can directly poison thrushes
Cold winters reduce earthworm availability causing significant thrush mortality

Welfare Considerations

Song thrushes in increasingly impoverished habitats cannot access their specialist prey at sufficient rates to maintain energy balance and reproductive success. Slug pellet use that reduces snail populations directly reduces the specialised food resource that song thrushes depend on. Cold winters when earthworms are unavailable cause starvation in birds unable to access sufficient alternative food. Garden management that maintains snail populations and earthworm-rich soil directly supports individual thrush welfare.

What You Can Do

Avoid slug pellets and use physical barriers to protect plants from slugs instead
Maintain log piles, leaf litter, and pond habitats that support thrush prey populations
Report song thrush sightings to contribute to population monitoring programmes