Populations of farmland, woodland and marine birds have all fallen dramatically over the past 50 years, according to new government figures.
In all bird species, populations have declined by six per cent since 1970, but some species saw stunning declines over the past five decades, as pesticides, the intensification of farming and the removal of hedgerows wreaked havoc.
Bird populations are seen as a key indicator of the health of the natural world as they tend to feed on small insects that are the basis of the food chain.
The Royal Society for the Protection of Birds (RSPB) said the figures, produced by the Department for Environment, Food and Rural Affairs (Defra), said that “wildlife is in serious trouble”.
However, the charity added that in most cases it was known what to do to help the species recover.
The figures cover 130 bird species, including turtle doves, corn buntings, willow tits and grey partridges, which have all fallen to less than 10 per cent of the levels in 1970.
There were also some success stories with populations of birds like blackcaps, great spotted woodpeckers, red kites and collared doves increasing by several times.
But the overall picture was one of decline.
Birds associated with farmland, which covers 75 per cent of land in the UK, were down by 55 per cent, woodland birds by 21 per cent and seabirds by 20 per cent.
On farmland birds, the Defra report said: “The majority of this decline occurred between the late 70s and the 80s largely due to the impact of rapid changes in farmland management during this period.
“More recently decline has continued but slowed; the smoothed index decreased by eight per cent between 2009 and 2014.”
It blamed the “intensification of farming that took place since the 1950s and 60s … a move from spring to autumn sowing of arable crops, change in grassland management (eg a switch from hay to silage production), increased pesticide and fertiliser use, and the…