Here are some characteristics and information about the Kalaw or Philippine eagle:
* Size: Philippine eagles are the largest eagles in the world. They typically weigh between 4.5 and 7.5 kilograms (10 and 16.5 pounds) and can have a wingspan of up to 2.2 meters (7 feet).
* Appearance: These eagles have dark brown plumage with white-tipped feathers on their wings and tail. They have a distinctive crest of feathers on their head, which can be raised and lowered.
* Diet: Philippine eagles are apex predators and primarily hunt flying lemurs, monkeys, and other small animals. They have been known to take prey that weighs up to 3.5 kilograms (7.7 pounds).
* Habitat: These eagles are found in tropical lowland forests and montane rainforests at altitudes up to 1,800 meters (5,900 feet). They prefer dense forests with tall trees where they can build nests and soar above the canopy.
* Nesting: Philippine eagles build massive nests in tall trees, using branches, leaves, and other vegetation. They usually lay one or two eggs per breeding season, and the incubation period lasts for about 55 days. The young eaglets are cared for by both parents and typically take around two years to become fully independent.
* Conservation Status: The Philippine eagle is critically endangered due to habitat loss, hunting, and trapping for the illegal pet trade. There are estimated to be only around 400 to 500 individuals left in the wild. Conservation efforts are ongoing to protect the remaining populations and their habitats.