The population of breeding birds in the UK has plummeted by 21 percent since 1966, losing more than 44 million birds in less than a half-century, according to the newly released State of the UK’s Birds 2012report. According to experts, the number of house sparrows has
dropped from 30 million in 1966, when the first reliable bird-monitoring surveys were conducted, to about 10 million today — a loss of about 50 sparrows every hour. Once-abundant populations of the willow tit have all but disappeared in most regions of the UK, while numbers of the lesser spotted woodpecker and Arctic skua are now too few to number. Populations of farmland bird species are now half of what they were in 1970, according to the report, which draws on information from numerous bird surveys and databases. Land use changes and coastal water management have likely been key factors in these declines, as some species have had increasing difficulty finding suitable places to nest or forage, experts say.
State of the UK’s Birds 2012