What type of eagle is described if it is dark with large white patches underneath its wings?

The description of an eagle that is dark with large white patches underneath its wings most accurately corresponds to the immature bald eagle. Immature bald eagles exhibit a dark brown body with striking white patches on the underside of their wings, making them distinctly identifiable. As they mature into adults, their plumage transitions to the characteristic white head and tail.

While immature golden eagles are also dark, they typically do not have large white patches underneath their wings, which helps distinguish them from the immature bald eagle. The adult golden eagle and adult bald eagle have different coloration patterns that do not match the description provided, as the adult bald eagle has a white head and tail that makes it unmistakably different from the immature version.

Understanding these identification markers is crucial for falconers and wildlife enthusiasts alike, as accurately recognizing different species is essential for responsible and respectful bird handling and observation.