To avoid startling them, he and his assistant wore camouflage and waders, hid in camouflaged tents, and spent seven to eight hours at a time on riverbanks, in the weeds, or amongst the bushes.
為了不驚動鳥兒，他和助手身穿迷彩裝、沼澤衣，甚至躲在偽裝棚內，在溪畔、草叢、灌木堆中，一待就是七、八個小時。