-
least on a bird's head, neck and trunk.
Filoplumes are
entirely absent in ratites. In some p****erines,
filoplumes arise exposed beyond the
pennaceous feathers...
-
white filoplumes on the head in the
breeding season vary with both the age of the bird, and the subspecies;
older birds have more
white filoplumes than...
- than
other birds;
lastly the
filoplumes are
small (less than 1 cm long)
naked shafts that end in a
splay of fibers—
filoplumes were
believed to give flying...
- developed,
there are six
different types of feathers: contour, flight, down,
filoplumes, semiplumes, and
bristle feathers.
Feathers were not
originally meant...
-
around 12 million
years ago.
Given that the head
ornamentation by
yellow filoplumes seems plesiomorphic for the Eudyptes-Megadyptes lineage,
Madrynornis probably...
-
centimetres of
their eyes.
Caught prey can be felt by owls with the use of
filoplumes—hairlike
feathers on the beak and feet that act as "feelers".
Their far...
-
Mechanoreceptors at the base of the
filoplumes only fire when
contour feathers are
displaced or the
filoplume moves.
Preening enables birds to remove...
-
filoplumes attached and
sprouting from near the same
point of the skin as each
contour feather, at
least on a bird's head, neck and trunk.
Filoplume feathers...
-
white tufts appear on the
sides of the head,
there are
scattered white filoplumes on the side of the head and the neck, and the
throat patch develops a...
- Here,
asymmetrical flight feathers,
bipinnate plumulaceous feathers,
filoplumes,
powder down, and
bristles evolved. Some
evidence suggests that the original...
