Birds do have bones.
bird bones are lighter
bird bones are smaller and light weight, and this is why they can fly easier. if a mammal tried to fly, with its thick bones, it might wind up with shattered ones
Bird bones because feathers are very light and the bones just depend on the type of bird.
Flight requires that the weight of the bird be kept as low as possible.
Bird Bones in the Bughouse was created in 2004-10.
The benefits of having a solar powered bird bath are for example no cost for electricity and no issues with getting power to the desired place of the bird bath.
regular bird bones
Birds can fly because they have feathers that enables them to fly. That, and having hollow bones, being lightweight and flapping their wings to propel them through the air.
The kiwi is a bird and has a spine (backbone).
Human bones are thicker and denser; bird bones are thinner, hollow and mean less weight on the bird.
Having your children attend early bird courses will help them develop faster and be more prepared for the earlier years in kindergarten and elementary school, it might help them deal with peers and other issues that will come up later in life.
No, bird bones are hollow.