Birds have really good eyesight. If a bird is travelling, and it needs to rest, can it spot a nest that is not?

Birds have really good eyesight. If a bird is travelling, and it needs to rest, can it spot a nest that is not ... being used and bed down for the night. I'm thinking eagles, hawks, etc. I think I see and hear indications of this, but am not sure.

Asked by Mr.^Carrot 29 months ago Similar Questions: Birds eyesight bird travelling rest spot nest Recent Questions About: Birds eyesight bird travelling rest spot nest Sports & Recreation > Birding.

Similar Questions: Birds eyesight bird travelling rest spot nest Recent Questions About: Birds eyesight bird travelling rest spot nest.

Vision is the most important sense for birds, since good eyesight is essential for safe flight, Vision is the most important sense for birds, since good eyesight is essential for safe flight, and this group has a number of adaptations which give visual acuity superior to that of other vertebrate groups; a pigeon has been described as "two eyes with wings".1 The avian eye resembles that of a reptile, but has a better-positioned lens, a feature shared with mammals. Birds have the largest eyes relative to their size within the animal kingdom, and movement is consequently limited within the eye's bony socket.1 In addition to the two eyelids usually found in vertebrates, it is protected by a third transparent movable membrane. The eye's internal anatomy is similar to that of other vertebrates, but has a structure, the pecten oculi, unique to birds.

Birds, like fish, amphibians and reptiles, have four types of colour receptors in the eye. Most mammals have two types of receptors, although primates have three. This gives birds the ability to perceive not just the visible range but also the ultraviolet part of the spectrum, and other adaptations allow for the detection of polarised light or magnetic fields.

Birds have proportionally more light receptors in the retina than mammals, and more nerve connections between the photoreceptors and the brain. Some bird groups have specific modifications to their visual system linked to their way of life. Birds of prey have a very high density of receptors and other adaptations that maximise visual acuity.

The placement of their eyes gives them good binocular vision enabling accurate judgement of distances. Nocturnal species have tubular eyes, low numbers of colour detectors, but a high density of rod cells which function well in poor light. Terns, gull and albatrosses are amongst the seabirds which have red or yellow oil drops in the colour receptors to improve distance vision especially in hazy conditions.

Sources: en.wikipedia.org/wiki/Bird_vision .

I can remember a few occasions which I have actually found such birds trying to spend their evening sleeping! Of course I always seem to agitate them and then find myself feeling bad that I somehow had to inconvenience them. For example; you have those nesting birds like the American Robin who always seem to settle on that perfect location right next to the main door.

During the day they will flush the nest with any attempt to approaching the door but at night they will lay very low and only flush when approached too close. monarchbfly.com/2007/01/25/sleeping/? Where do birds go at night?

Birds tend to sleep in the same areas they inhabit during the day. To protect against predation, many birds will sleep in a way that enhances their security within this habitat. Water birds will sleep sitting or standing in the water or on predator-free islands.

Many other birds, such as horned larks, quail and sparrows, sleep on the ground in dense vegetation. Birds which nest in cavities tend to sleep in their trees, chimneys, or in nest boxes far away from many predators. It is no ac- cident that the majority of bird species, including those that are not regular tree-dwellers, prefer to sleep in trees or dense shrubs.

There they are out of reach of preda- tors which cannot climb and are warned by vibrations of other carnivores long before they are a danger. wvdnr.gov/Wildlife/Magazine/Archive/06wi... it's not true in every case, most birds tend to roost in the same type of habitat that they choose to nest in. You would think that a dense thicket or the top of a tall tree would be an appealing place for both building a nest and for sleeping; and for some birds, it is...but not for gulls.

They like it out in the open. Barrier beaches, dunes, sandbars, and lightly vegetated islands all appeal to gulls looking to build a nest. The same locations are also attractive to gulls when it comes time to getting some shuteye.

However, inland gulls can't go running back to the beach every night, so they look for similar habitat locally. Open fields, parks, parking lots, and even rooftops of large buildings are substituted for beaches. Sleeping in the middle of a parking lot doesn't sound very cozy to me, but gulls are a paranoid lot.

They like to be out in the open where they can see danger coming from a long way off. Gulls, and most birds, have a reason to be paranoid. The second they close their eyes there is a chance that something will try to eat them.

Because of ever-present danger, they rarely have anything close to a solid eight hours. http://reliableanswers.com/seasonal/sleeping_birds.asp Sources: monarchbfly.com/2007/01/25/sleeping/ .

1 Eagles and hawks have very keen eye sight. National Geographics have shown films where these birds can spot a mouse or rabbit about 5 miles away while in flight. And there are other birds of prey with this same ability.

The harpy eagle is much larger than the bald eagle. Some have wing spans up to 10 feet. My son and eye saw a osprey in our front yard one summer ago.

It was large. It is a cross between a hawk and a owl. Its a very large bird that makes their home any where near a body of water.

We live near the ocean. These birds can spot fish swimming in the water. So they swoop down and carry their prey away.

Yes they can see great distances where a human cannot.

Eagles and hawks have very keen eye sight. National Geographics have shown films where these birds can spot a mouse or rabbit about 5 miles away while in flight. And there are other birds of prey with this same ability.

The harpy eagle is much larger than the bald eagle. Some have wing spans up to 10 feet. My son and eye saw a osprey in our front yard one summer ago.

It was large. It is a cross between a hawk and a owl. Its a very large bird that makes their home any where near a body of water.

We live near the ocean. These birds can spot fish swimming in the water. So they swoop down and carry their prey away.

Yes they can see great distances where a human cannot.

2 Go to Youtube and check out the video. "Golden eagle flies away with a goat. "This will give you a very good idea about how large these birds are.

And the strength that they have. Look real good at the wing span. Birds who are held in captivity do not grow as large as birds who are free to fly.

This video is amazing. That is if you have not seen this before. Let me know what you think.

I have seen with my own eyes how hawks and eagles snatch sea gulls in mid flight. And they break the sea gulls necks with their talons and beaks. Watch the video.

Go to Youtube and check out the video. "Golden eagle flies away with a goat. "This will give you a very good idea about how large these birds are.

And the strength that they have. Look real good at the wing span. Birds who are held in captivity do not grow as large as birds who are free to fly.

This video is amazing. That is if you have not seen this before. Let me know what you think.

I have seen with my own eyes how hawks and eagles snatch sea gulls in mid flight. And they break the sea gulls necks with their talons and beaks. Watch the video.

3 but to answer the question, since they use the nest primarily for child-rearing, I think in migratory flight, they don't bother looking for a vacant nest - they just roost in a tree .

But to answer the question, since they use the nest primarily for child-rearing, I think in migratory flight, they don't bother looking for a vacant nest - they just roost in a tree.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.