Facts : 1 Although the population appears to be in a decline, the decrease is not rapid enough to trigger the IUCN vulnerability criteria Facts : 2 Populations have declined in recent decades in western Europe, including the British Isles, Belgium, the Netherlands, Austria and Italy Facts : 3 The yellowhammer is a red-list (severely declining) species in Ireland and the UK Facts : 4 In eastern Europe, numbers appear to be stable, although the trend in Russia is unknown Facts : 5 Changes to agricultural practices are thought to be responsible for reduced breeding densities Facts : 6 The introduced population in New Zealand has been very successful, with breeding densities much higher than in the UK