Song thrushes have declined significantly in UK farmland and gardens, with welfare linked to slug prey availability, ground-nesting vulnerability, and habitat loss.
Song thrush welfare in UK gardens and farmland is directly affected by the choices humans make about pest management, lawn care, and habitat provision. Their specialised feeding ecology - using anvil stones to crack open snail shells and probing soft soil for earthworms - makes them particularly vulnerable to the pesticide-induced depletion of invertebrate prey. Gardens where slug pellets and lawn pesticides are used may appear productive habitat but may lack the prey base that thrushes require, particularly for raising chicks during breeding season when protein demand is high. Ground-nesting song thrush chicks are vulnerable to cat predation during the fledgling period, and the high density of cats in suburban gardens creates significant mortality pressure. Ground-level disturbance during nest building and incubation can cause nest abandonment. The welfare improvement available through garden management changes is substantial: eliminating pesticides, allowing moist lawn areas, providing muddy patches near nesting habitat, and reducing cat predation risk during breeding season can all benefit individual thrush welfare and contribute to local population recovery.