Mountain hawk-eagles raise only one brood a year, and lay only one egg per brood, and the eaglet stays in the nest for 75-80 days after it hatches. If during this time the eagles suffer attack by natural enemies, habitat destruction, or human disturbance, the breeding season may to come to nothing.
由於熊鷹一年只營一巢，而且一年只有一顆蛋，哺育時間長達 75-80 天，其間不論遇到天敵、棲地破壞、人類干擾，都會使繁殖季泡湯。