These diagnostic nodes typically occur only at distal portions of the
barbules, but there are consistent differences in the locations of these triangular-shaped nodes on
barbules for some groups of waterfowl (Dove and Agreda, 2007).
The
barbules and the alignment of melanosomes within them, Carney said, are identical to those found in modern birds.
Ground in a pestle, the kingfisher's feathers are dark brown, similar to ravens; contour feathers have a tiny turquoise spot at the tip and colourless
barbules to trick the light and scatter the blue-green wavelengths.
The detailed examination of longitudinal sections of feather filaments showed the beginning of differentiation of barbs and
barbules (Fig.
His beak reseals the
barbules by zipping them together.
Entre noviembre de 2000 y julio de 2002, en el embalse de la HU, se recolectaron entre 3 y 25 peces mensuales, para un total de 453, distribuidos en 115 pericos, 111 cacuchos, 108 yaluas, 89 mojarras amarillas, 11 moncholos, 10
barbules y 9 doncellas.
In turn, hundreds of
barbules project from each barb.
And if there are differences in effectiveness, can we determine as
Barbules and Callister (2000) put the challenge: "Which technologies have educational potential for which students, for which subject matters, and for which purposes?
Each barb has thousands of smaller
barbules that project toward adjacent barbs.
Their wings are rudimentary, and their feathers lack
barbules, which is why they look like hairs.
It gets it's name from the four
barbules around its mouth which it uses for finding its food on the river bed.
Feathers also have
barbules (little hooks) that fit together almost like a zipper to keep the feather flat and smooth.
