Answer
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Hint: A bird’s eyes on its head affects its field of vision. That's the area one can see in front and to the side at any one time. In birds binocular and monovision are present in different birds.
Complete step by step answer:
Pigeons and parrots have eyes on either side of the head, but other birds, such as owls, have large eyes placed close together at the front of their heads.
Additional information:
- As owls have eyes at the front of their heads, they need a smaller field of vision – around 150 degrees for a Tyto alba.
- Parrots, pigeons and other birds with eyes on the edges of their heads have a way bigger field of vision, of about 300 degrees.
- For parrots and pigeons, having eyes on the edges of their heads may be a huge advantage.
- Having a wider field of vision with only a little blind spot behind them lets these birds see where they're going, while also keeping an eye fixed out for predators.
- For predatory raptors like barn owls, having forward- facing eyes helps them to ascertain depth and distance far more clearly, since both eyes can specialise in an equivalent object at the same time. This is perfect for spotting and catching small prey like field mice.
- Owls and other animals with excellent night- sight have a reflective surface behind their retina referred to as the tapetum lucidum.
- Eagles also can quickly shift focus, allowing them to essentially “zoom” in on their prey.
- They also can see a wider range of colors than we can, allowing them to differentiate small changes in coloration in their prey, as well as see UV light.
- Prey animals, like deer, horses, and elk, who spend their time grazing out in the open and they must be constantly on alert, have wide and narrow horizontal pupils, which gives them a wider field of vision than nearly the other animal.
Note:
- Binocular vision means both eyes specialise in an equivalent object at an equivalent time, and eye movement is coordinated, this is often the type of vision that predatory birds like owls rely on most.
- Monocular vision means each eye is concentrated on a special object at any particular moment, and this is often normal for parrots and pigeons.
Complete step by step answer:
Pigeons and parrots have eyes on either side of the head, but other birds, such as owls, have large eyes placed close together at the front of their heads.
Additional information:
- As owls have eyes at the front of their heads, they need a smaller field of vision – around 150 degrees for a Tyto alba.
- Parrots, pigeons and other birds with eyes on the edges of their heads have a way bigger field of vision, of about 300 degrees.
- For parrots and pigeons, having eyes on the edges of their heads may be a huge advantage.
- Having a wider field of vision with only a little blind spot behind them lets these birds see where they're going, while also keeping an eye fixed out for predators.
- For predatory raptors like barn owls, having forward- facing eyes helps them to ascertain depth and distance far more clearly, since both eyes can specialise in an equivalent object at the same time. This is perfect for spotting and catching small prey like field mice.
- Owls and other animals with excellent night- sight have a reflective surface behind their retina referred to as the tapetum lucidum.
- Eagles also can quickly shift focus, allowing them to essentially “zoom” in on their prey.
- They also can see a wider range of colors than we can, allowing them to differentiate small changes in coloration in their prey, as well as see UV light.
- Prey animals, like deer, horses, and elk, who spend their time grazing out in the open and they must be constantly on alert, have wide and narrow horizontal pupils, which gives them a wider field of vision than nearly the other animal.
Note:
- Binocular vision means both eyes specialise in an equivalent object at an equivalent time, and eye movement is coordinated, this is often the type of vision that predatory birds like owls rely on most.
- Monocular vision means each eye is concentrated on a special object at any particular moment, and this is often normal for parrots and pigeons.
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