It depends on the rotation and revolution of the earth.
In different seasons, different species of birds will fly more or less (both more or less frequently and in greater or lesser duration) than in other seasons.
At different times of day, different species will be either awake or resting, making them more or less likely to be in flight.
Birds fly in the air by pushing their chest muscles and moving their wings up and down.
Birds fly in air. They use the air to fight gravity. When air travels faster along the upper wing than the lower wing, the air force down is less than the air force up -- really helps most birds. Gravity affects birds.
Yes, look up "air Layering" for the method of propagating many varieties from a limb. Roots are grown on the limb, then it is cut from the tree and planted. Many bonsai are started this way.
By puffing out their feathers in the cold birds create a larger insulating layer of air and feathers, which helps them retain body heat. Many mammals do the same with their fur.
Yes. Air has power to push and pull on the birds, balloons, kites and planes.
Some varieties can take up to a year to ferment.
Ex:- Flying gracefully through the air, birds depend on Newton's third law of motion.As the birds push down on the air with their wings, the air pushes their wings up and gives them lift.
im not sure if they have an extra air sack but if they do its because birds fly very high and they is not much oxygen up where they fly, plus i do know they have a light bone structure.
There are hundreds of different varieties of Rubbermaid trash cans that are currently available online. These varieties range from smaller designs meant to be used indoors, to large trash can, up to 32 gallons, that are used outside.
group of planes that do awesome tricks in the air for big crowds.... theyre pretty cool, look them up.
Coming Up for Air has 237 pages.
Up in the Air - novel - has 303 pages.