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| Description: (a) The wing is supported by an elongated and modified forelimb with extended fingers. (b) Each feather has a hollow shaft that supports many barbs, which in turn support barbules that interlock with hooks to give the feather its form. (c) The bones of a pelican (Pelicanus occidentalis) are hollow but crisscrossed with a honeycomb structure that provides added strength.
Picture Stats: Views: 1472 Filesize: 54.37kB Height: 334 Width: 850 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=114 Keywords: Features of the bird wing and feather |