6 foot or so tall Owls with 6 foot wingspans must be quite a site!
That is known as false perspective.
Late at night, frightened to death, it would be very easy for a person to lose rational perspective of what they are seeing. You would not believe how many fishermen have told me about 'the one that got away'. It was a largemouth bass, 4 feet long! It must have weighed 200 pounds!
Any Cop will tell you that what people think they saw in recollection is most likely just a general, non-specific sketch of what they actually saw. Show me a video of it, and I will believe it.
![Image result for false perspective photography](https://assets.hongkiat.com/uploads/force-perspective-photos/crushed_foot.jpg)