Brief SummaryRead full entry BiologyA monogamous species, Javan
hawk-eagles remain with the same partner year after year, mating
between January and June. Nesting in trees, just one egg is laid
each year. The female incubates the egg for 47 days, during
which time the male hunts to feed both himself and the female.
After hatching, the female also hunts, providing the chick with
meat for a relatively extended period. Even after fledging, the
young bird will remain with its parents, living in their
territory for more than a year. It will be three or four years
before it forms a pair and breeds (4). The Javan hawk-eagle
hunts mainly from the branches of small trees, where it watches
for small to medium-sized tree-dwelling mammals such as tree
shrews, squirrels, fruit bats and occasionally young monkeys. It
is also known to eat birds and reptiles when possible (5).