The white tail eagle (Haliaeetus albicilla, a type of sea eagle) is an Asian/ European bird of prey from the family Accipitridae. The white tail eagle has a 5-8ft wingspan, the largest of all the eagles and can weigh anywhere between 3-7kg. Despite its wingspan, the white tail eagle is considered to be only the fourth largest eagle in the world. White tail eagles are mostly grey-brown with the exception of the white tail and yellow beak and feet. They have an average lifespan of 21 years though they have been know to live up to 25 and 26. The white tail eagle is of the order Falconiformes, meaning birds of prey. There are over 290 bird species within this order.