Why are eagle owls called so?

Because many sub-species of them are as large as eagles. The internet has failed me on a size comparison. But here is a Eurasian Eagle Owl with its natural prey, a red fox! read more

Eagle owls are actually related to Great-horned Owls but they are much, much larger, which as far as I can tell is why they got that name. They are the largest of all owls and are as big as some eagles, and they are found in many parts of the world. read more

The Eurasian eagle-owl rarely assumes the so-called "tall-thin position", which is when an owl adopts an upright stance with plumage closely compressed and may stand tightly beside a tree trunk. Among others, the long-eared owl is among the most often reported to sit with this pose. read more

Verreaux's eagle-owl are likely to give martial eagles a respectful amount of space during daytime and there are no records of the two species harassing one another. Another particularly large and aggressive eagle, the crowned eagle (Stephanoaetus coronatus), is largely a forest-dweller and so is less directly a diurnal equivalent. read more