Eagle (Franchise)

Eagles are birds of Prey mentioned very nominally in the How to Train Your Dragon Franchise.

Description
Though there is no specific taxonomic designated just for eagles, the approximately 60 different species are found in a number of Genuses in the Family Accipitridae. They are considered the largest birds of Prey, other than some Condor and Vulture species. Eagles primarily inhabit Europe and Africa, but a few species are also found in North and South America, and Australia. Eagles generally have large, board wings and are excellent fliers and soarers. They are also known to take very large prey, sometimes outweighing themselves. Most eagle species are the top predators in their respective environments.

Several species of eagles live in Scandinavia including the wide-spread Golden Eagle (Aquila chrysaetos), the White-tailed eagle (Haliaeetus albicilla), and the Greater-spotted Eagle (Clanga clanga).

Function
Within the How to Train Your Dragon Franchise, eagles are only mentioned as metaphors for certain situations.

In reality, eagles are revered in many cultures around the world for their strength, flight, and regal bearing. Eagles do appear in Viking mythology. There is an eagle often dipicted sitting atop Yggdrasil, the world tree. The giant Jotunn, Hraesvelgr, is able to turn into an eagle.

Dragons: Rise of Berk
In a quest involving Hiccup and Valka, who has not been revealed as his mother yet, Hiccup tries to catch the unknown Dragon Rider

"YOU caught ME? Like a rabbit catching an eagle!"

- Valka

School of Dragons
In the "Hidden World" Expansion, Eret, Son of Eret refers to his excellent vision as eagle eyes.