I might be wrong, but I'm fairly sure they are hollow. Most mammals' bones are dense and built solid by calcium deposits, but bird bones are hollow so the animal is therefore light enough operate its wings and defy gravity.
Finger Bones The "one other" is Human
They are the SAME structure, in different organisms, connected through evolution. A common example are the arms of humans, the wings of a bat, the fins of a whale, are all the same bones but have been adapted for different uses.
The similarity in bone structure between the wing of a bat and the flipper of a whale suggests that bats and whales share a common evolutionary ancestor. This phenomenon is known as homology, where different species exhibit similar anatomical features due to descent from a shared ancestor, despite having evolved in different environments and for different functions. It highlights the concept of convergent evolution, where unrelated species develop similar traits as adaptations to their environments.
A homologous structure to a human arm bone would be the forelimb bones in other mammals, such as the forelimb bones in a bat or a whale. These structures may have different functions (e.g. for flying or swimming), but they share a common evolutionary origin with the human arm bones.
Whale bones sink in water because of the lack of blubber that makes the whale float.
from the wale?
Whale Bones - 2013 was released on: USA: 2 January 2013
Whale is a mammal. Human being is also a mammal. So whale should have about 206 bones in it's skeleton. Only number of tail bones should vary in number.
Whale bones are adapted for a fully aquatic lifestyle, being more streamlined and lighter than those of land animals to reduce buoyancy and allow for efficient movement in water. Unlike the dense, weight-bearing bones of land mammals, whale bones often have a spongy, cancellous structure that provides strength while minimizing weight. Additionally, whale bones lack the prominent adaptations for muscle attachment found in terrestrial animals, as swimming involves different mechanics compared to walking or running. These adaptations reflect the evolutionary transition of whales from land-dwelling ancestors to their current aquatic form.
Articulated. Just like yours, just different arrangement of some bones.
A homologous structure is a structure found in two very different animals that has a similar form in both animals. For example, the bones of a human hand are homologous to the bones in a bat's wing or a whale's flipper. Structures that appear very similar suggest that two animal may be related, as in humans, bats, and whales, which are all mammals.
Whales.