We see numerous nature programs all showing eagle eye view and commenting the can see a rabbit moving a x feet in the air, but how do actually know?
2006-07-12 06:40:46 · 10 answers · asked by RodBell 2 in Education & Reference ➔ Other - Education
Firstly, behaviouralists have extensively studied their behaviour, and the moment a kill is sighted the bird will lock on to its prey. Hence a good estimate of the distance between them is the first stage of gauging visual acuity.
The second is first hand investigation of the anatomy of the eye, and the anatomy and physiology of these birds has been quite thoroughly undertaken.
Birds of prey all have binocular vision like ours (eyes at the front of the head), a necessity in predatory species.
For more information, see this link: -
http://ebiomedia.com/gall/eyes/sharp.html
2006-07-12 06:46:31 · answer #1 · answered by Grimread 4 · 5⤊ 0⤋
It wouldn't be too hard to find out if you did some experiments with an eagle. Get rabbit or mice or whatever and then get larger and smaller rabbits and mice and test each one of them on the eagle to see if the eagle goes after them.. Put them at different distances unti the eagle can't see them anymore then you know how strong an eagle's vision is.
2006-07-12 06:51:40 · answer #2 · answered by Willster31 2 · 0⤊ 0⤋
Well they saw this eagle leisurly souring and a rabbit below. Then they saw the Eagle spot the rabbit, and they can tell how high the eagle was up. The person who sees the biggest distance of dive says that is the maximum. and also they can look at the stength of lenses in the dead eagle
2006-07-12 06:59:14 · answer #3 · answered by Lydia F 2 · 0⤊ 0⤋
I think we know mostly from dissection of the animal and knowing how many 'rod' and 'cone' cells it has. A sensitity to movement, rather that actual resolution of an image, may be more important.
If you like to think of it in PC image terms, then think of two photos taken of a moving object. In the first photo one can look at individual pixels and say whether they are light or not. Then think of two images. If the same pixels change in color, then that immediately sends a message to the brain - or not, depending on how that brain is set up to notice that.
2006-07-12 08:38:33 · answer #4 · answered by Owlwings 7 · 0⤊ 0⤋
Ehm..
I was looking for a free download Eagleget I found it here http://j.mp/1lhstJE
It works very well
Best
2014-07-24 09:53:57 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Anathomy/Fisiology/Try outs/Experiments/ With a rat maybe. Your choice.
2006-07-12 06:43:13 · answer #6 · answered by Christian G 2 · 0⤊ 0⤋
They only estimate. Its the same way with evolution - no one knows for sure.
2006-07-12 06:42:41 · answer #7 · answered by Anonymous · 0⤊ 0⤋
they torture an eagle until it tells them.
2006-07-12 06:42:40 · answer #8 · answered by Anonymous · 0⤊ 0⤋
anatomy and physiology
2006-07-12 06:41:35 · answer #9 · answered by somepaliguy27 4 · 0⤊ 0⤋
maybe they test
2006-07-12 06:50:07 · answer #10 · answered by brentmidger 2 · 0⤊ 0⤋