Page 44 - Design in Nature

42 DESIGN IN NATURE

are considerably lighter than those of land-dwelling animals. Their lungs are
of a different structure and function as well as are their skeletal and
muscular structures. Their circulatory systems are much more specialised
than those of land animals. All of these mechanisms could not possibly
come into existence over time through an "accumulative process".
Assertions of the transformation of land-dwelling animals into birds are,
therefore, only nonsensical claims.

Structure of Bird Feathers
The theory of evolution, which claims that birds are descendants of
reptiles, is not able to explain the colossal differences between these two
classes of beings. Birds display properties distinct from reptiles in having a
skeletal structure composed of hollow, extremely lightweight bones, and a
unique respiratory system and in being warm-blooded creatures. Another
structure unique to birds, which places an unbridgeable gap between birds
and reptiles, is the feather.
Feathers are the most important of the interesting aesthetical aspects of
birds. The phrase "light as a feather" depicts the perfection in the intricate