Why do muskrats have invisible wings and fly backwards?
966415
Switch him to corn flakes and everthing should pan out.
1086704
An aircraft flies due to aerodynamic reactions that happen when there is relative motion between air and a wing.\n\nIf a cross-section of a typical aircraft wing is viewed, the top of the wing can be seen to be curved downwards, while the bottom of the wing is less curved or straight, but angled to the airflow. This shape, called an airfoil or aerofoil, creates lift when it travels through the air. However, this optimisation is not applicable for aerobatic aircraft, which need to fly inverted, or for supersonic aircraft.\n\nLift is created as an airstream passes by something which deflects it. The force created by this deflection of the air creates an equal and opposite force on the wing according to Newton's third law of motion. The deflection of airflow downward during the creation of lift is known as downwash.\n\nNearly any shape will produce lift if curved or tilted with respect to the air flow direction. However, most shapes will be very inefficient and create too much drag. One of the primary goals of wing design is to devise a shape that produces the most lift while producing the least lift-induced drag.\n\nA false explanation for lift has been put forward in mainstream books, and even in scientific exhibitions. Known as the equal transit-time fallacy, it states that the parcels of air which are divided by an airfoil must rejoin again; because of the greater curvature (and hence longer path) of the upper surface of an aerofoil, the air going over the top must go faster in order to "catch up" with the air flowing around the bottom. Therefore, because of its higher speed the pressure of the air above the airfoil must be lower. Despite the fact that this "explanation" is probably the most common of all, it is false in that there is no requirement that divided parcels of air rejoin again, and in fact they do not do so.\n\nNevertherless, the deflection of the air does cause changes in the pressure above and below the wing; generally a higher pressure area forms below and a lower pressure forms above; these changes in pressure are necessary for the deflection to occur, and it is these pressure differences over the area of the wing that provides the force that holds the aircraft in the air.
268841
ok\n Hoatzin chicks have archyopterix-style claws on their wings\n\nPuffin`s beaks are not as colourful out of the breeding season\n\nThe Goatsucker (no, not el Chuppacabra, the bird!) of the USA is called a Nightjar in the UK\n\nAmerican Robins are not related to european Robins, they are in fact a type of thrush\n\ncormorants have to open their wings to "dry" them as they`re not as waterproof as other waterbirds.
532453
Because it couldnt fly
380562
Newton's 3rd law states that for every action, there is an equal and opposite reaction.\nIf the bird pushes backward with some force, another force of equal magnitude will push the bird forward.  This is similar to how rockets work, the rocker engines push one way, the space craft accelerates the opposite way.\n\nAnother way of thinking of it is that momentum is always conserved.  If the bird exerts a force on the air backward, that air (which has mass) experiences a change in momentum.  In order for momentum to be conserved, another force needs to be exerted on the bird to accelerate it in the opposite direction.
686727
The cars will have very little grip.\n\nThe reason why F1 cars have reverse wings is so that it pulls the cars firmly to ground (at a force of 3 times their own body weight...I think?) This will cause more tyre mass to touch the track's surface which will result in more grip when turning through corners at high speeds. If the cars had no wings, they would flip/crash when going through corners at similar speeds.
890148
The hummingbird will start moving backwards because the plane is accelerating and unless the bird is moving forward, the bird's inertia will have it attempting to stay in place which is moving backwards.\n\nBut if you're talking about a non-accelerating plane that is moving at a constant velocity then the bird will stay in place.
1159415
Your question doesn't make sense.  You might as well ask why is the air invisible when we can see birds flying in it.\n\nYou can see her BECAUSE the jet is invisible.  It's that simple.\n\n--J.
592588
They're like the wings on a '52 Studebaker. They serve no purpose but they sure look cool.
707767
Mathematically it is impossible for a honey bee's wings to support it in flight.\nThe praying mantis is the only insect that can turn it's head.\nScientists still do not know how a cat purrs or where in it's body the noise comes from.
1149908
sorry but havent got an answer for you however you did succed in making me laugh for a second so thank you. i guess you could say the same about bats, they are blind but only come out at night....Whats the difference lol. Do you think they are also aware that they hang upside down????
406248
Hummingbirds can fly right, left, up, down, backwards, even upside down due to their special wings. Hummingbirds are also able to hover by flapping their wings in a figure - 8 pattern.   http://www.kidsplanet.org/factsheets/hummingbirds.html
299853
Because they are fowl
642435
It's simply because two negatives repel. But if they are moving in different direction then too they will repel if they are close enough, but it would be hard to notice as they would already be moving away.
6433
The legs of a fly have a primary role of helping the fly to land and lift off, and also move about a little when its not flying. If the fly would not have wings, it would be able to move futher on its legs, but the mobility would be severly restricted because the legs haven't been used in that sense before. This fact is confirmed from experimentation done in around 2003, where a genetically mutated fly which didn't grow any wings tried to move solely on its legs.
1070876
One of its leaves are both alike!\n\nBut I still don't understand ... why a duck?
545087
I think you are right. Tazmanian devils are funny little things. I also get a good laugh from hedgehogs. But I think the weirdest looking animal has to be the anteater!!! :-)