The grey partridge has declined by 93% in Britain since 1970, with welfare closely linked to invertebrate availability for chick rearing and the survival of autumn and winter coveys.
Grey partridges in modern arable landscapes experience chronic welfare compromise from inadequate invertebrate food for chicks during the critical first six weeks of life. Chicks that cannot find sufficient insects fail to grow, are cold-susceptible, and die of starvation or exposure at high rates. Coveys that survive to autumn face reduced winter food availability in improved grassland landscapes with few weed seeds. Adult partridges in poor habitat territories show elevated stress indicators and reduced reproductive effort in subsequent breeding seasons.