Reply to thread

Message

<blockquote data-quote="MANTI5" data-source="post: 7665548" data-attributes="member: 627711">If the barbs of these feathers become separated, they are combed with the beak. The beak applies pressure as the barbs pass through it, and the hooks on the barbules link together like the teeth of a zipper. Most birds have an oil gland at the base of the tail from which they take oil to condition each feather. Some birds have no oil gland but instead have special feathers that fray at their tips to produce a fine talclike dust for conditioning their feathers. And feathers usually are renewed by molting once a year.Knowing all of this about the feather, consider this rather astonishing effort to explain its development: “How did this structural marvel evolve? It takes no great stretch of imagination to envisage a feather as a modified scale, basically like that of a reptile—a longish scale loosely attached, whose outer edges frayed and spread out until it evolved into the highly complex structure that it is today.”&nbsp; But do you think such an explanation is truly scientific? Or does it read more like science fiction?Consider further the design of the bird for flight. The bird’s bones are thin and hollow, unlike the reptile’s solid ones. Yet strength is required for flight, so inside the bird’s bones there are struts, like the braces inside of airplane wings. This design of the bones serves another purpose: It helps to explain another exclusive marvel of birds—their respiratory system.</blockquote>

[QUOTE="MANTI5, post: 7665548, member: 627711"] If the barbs of these feathers become separated, they are combed with the beak. The beak applies pressure as the barbs pass through it, and the hooks on the barbules link together like the teeth of a zipper. Most birds have an oil gland at the base of the tail from which they take oil to condition each feather. Some birds have no oil gland but instead have special feathers that fray at their tips to produce a fine talclike dust for conditioning their feathers. And feathers usually are renewed by molting once a year. Knowing all of this about the feather, consider this rather astonishing effort to explain its development: “How did this structural marvel evolve? It takes no great stretch of imagination to envisage a feather as a modified scale, basically like that of a reptile—a longish scale loosely attached, whose outer edges frayed and spread out until it evolved into the highly complex structure that it is today.” But do you think such an explanation is truly scientific? Or does it read more like science fiction? Consider further the design of the bird for flight. The bird’s bones are thin and hollow, unlike the reptile’s solid ones. Yet strength is required for flight, so inside the bird’s bones there are struts, like the braces inside of airplane wings. This design of the bones serves another purpose: It helps to explain another exclusive marvel of birds—their respiratory system. [/QUOTE]

Verification