after years of tireless detective work, jeremy thomas discovered that the butterfly depends on a very specific species of and without it it cannot reproduce. and the species of ant itself needs a very specific natural environment. this is a very much a heat loving end, and ground temperature is actually determined by the height of this, of the graph. so the total of the grass grows the cool of the ground gates. and once that happens, lucas of the late fee is replaced by other species of bread, and this is why the bus light became extinct as a result of modern farming practices. cows disappeared from the meadows, upsetting the prevailing natural balance. the grass grew, the ants were driven out and the large blue disappeared. it went extinct in 1979. but almost immediately, we took the decision that we would try to re introduce it. because we thought we understood what it needed in this country at last. the 1st step was to restore the grassland to its former state, jeremy and david convinced livestock farmers to allow their cows to graze there again. only this specific interaction betw