Complex sentence: William reveals methods of poaching, by placing a raisin inside a "Sticky Hat", so that the pheasant cannot flee, and by having a horse's tailhair, threaded through a raisin, causing the raisin to become lodged in the pheasant's throat.
Split into simpler sentences: William reveals methods of poaching by placing a raisin inside a "Sticky Hat" so that the pheasant cannot flee. Having a horse's tail hair threaded through a raisin causes the raisin to become lodged in the pheasant's throat.