Thrushes are dying out and no one knows why. This man is determined to change that | The Independent
It is the detail of the job that bends the mind: he has already mapped 200 pairs of song thrushes in the study area, ringed 240 individual birds, studied 163 nests, spent three hours at a stretch observing single birds. He has even gathered a huge box of bird droppings to analyse at home during the long winter evenings.
To sympathise with any of this you need to grasp the whole Bird Picture, and the nub of it is that songbirds are dwindling fast. Figures produced by the British Trust for Ornithology show that song thrush numbers have dropped by 54 per cent since 1969, linnets by 56 per cent, bullfinches by 67 per cent, tree sparrows by 80 per cent and so on.