Pietro Librici - Alcedo Atthis
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Título: Alcedo Atthis
Especie: Alcedo Atthis
Descripción: (A) The common kingfisher. B)A back feather, which has cyan-coloured barbs in the tip region of the feather. (C) A breast feather, which has mainly orange-coloured barbs, but also orange barbules. (D) A tail feather, which has bluecoloured barbs in a large part of the feather.
The colours of the common kingfisher reside in in the barbs of feather.
(E) A sectioned barb of a breast feather with a few barbules. A thick cortex envelopes hollow cells. (F) Close up of a single cell. Small pigment granules are recognisable. (G) A sectioned barb of a tail feather with several barbules. A number of sponge cells are surrounded by the barb cortex. (H) In the centre of the sponge cells there exists a large vacuole, a remnant of a nucleus, which in the cut cell is seen as a suppression.
Categoría: Ilustración naturalista
Técnica: Watercolor, acrylic, ink on Hahnemühle paper
Tamaño: 35×47 cm
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