Lightweight Body: Despite their large size, Philippine eagles are relatively lightweight, with an average weight of 14 to 18 pounds (6.3 to 8.2 kilograms). Their lightweight bodies reduce the energy needed for flight and allow for efficient soaring.
Flight Muscles: Philippine eagles have robust flight muscles, particularly the pectoralis major and supracoracoideus muscles, which provide the power for flapping and soaring. These muscles attach to their large wing bones and enable the forceful downstrokes and upstrokes during flight.
Feathers: The feathers of Philippine eagles play a crucial role in their flight abilities. They have broad, aerodynamic flight feathers on their wings and tail that provide lift and stability. The arrangement and shape of these feathers help channel airflow efficiently, reducing drag and enhancing their soaring capabilities.
Soaring: Philippine eagles are known for their soaring flight, where they flap their wings occasionally and ride on rising air currents. Their long and broad wings allow them to exploit thermal updrafts, minimizing energy expenditure and covering great distances with minimal effort.
Habitat and Flight Behavior: Philippine eagles primarily inhabit forested regions with extensive canopies. Their flight patterns are influenced by their hunting strategies, as they glide and soar above the forest canopy, searching for prey. They also use their powerful wings for hunting, diving rapidly to catch their prey mid-air.