- or barbs; the
barbs themselves are also
branched and form the
barbules.
These barbules have
minute hooks called barbicels for cross-attachment. Down feathers...
-
Pennaceous feathers also have much
smaller barbules branching from the
entire length of each barb;
these barbules have tiny
hooks along their length, which...
-
number of
flattened barbs, that are
connected to one
another with
barbules. The
barbules are tiny
strands that criss-cross on the
flattened sides of the...
-
feather types. It has a
short or
vestigial rachis (shaft), few barbs, and
barbules that lack hooks.
There are
three types of down:
natal down, body down and...
-
nanostructures of the
barbules (fiber-like components) of the feathers,
produce the pea****'s colors.
Slight changes to the
spacing of the
barbules result in different...
- barb is
known as the ramus.
barbules Also, radius / radii;
tertiary fibres. Also defined:
proximal barbules;
distal barbules; barbicels;
hooklets (hamuli);...
- and
proximal barbules produce a closed,
pennaceous vane (a
contour feather). A
closed vane
develops when
pennulae on the
distal barbules form a hooked...
-
interference from a
single layer of
keratin around the edge of
feather barbules,
under which lies a
layer of air and melanosomes. Once the environmental...
- and
nostrils and on its neck with
barbules closer together. They are
stiffer with more
hooks and
nodes for
barbules to
attach to one another, yielding...
-
large stacks of
melanosomes in the
feather barbules,
occurring as
layers separated by keratin. The
barbules reflect incident light in the
manner of partially-opened...
