The birds 'size also makes it difficult for them to fly or hunt among the trees of the forest, so they mostly patrol the skies at a great height, looking out for prey. When they see something moving, they come down and land in the top of a tall tree with a good view, to wait their chance.
限於體型不易在林中游竄與追捕獵物，大冠鷲多半在高空巡伺獵物，發現動靜後，再降落視野良好的大樹高處守株待兔，伺機捕捉。