Feather These barbules have minute hooks called barbicels for cross-attachment. Down feathers are fluffy because they lack barbicels, so the barbules float free of each other, allowing the down to trap air and provide excellent thermal insulation. At the base of the feather, the rachis expands to form the hollow tubular "calamus" (or quill) which inserts into a follicle in the skin. The basal part of the calamus is without vanes. This part is embedded within the skin follicle and has an opening at the base (proximal umbilicus) and a small opening on the side (distal umbilicus). Hatchling birds of some
What the Little Bird Told Him thirteenth and final episode of the season. Gotham, originally scheduled for 16 episodes, still has 10 more to go though, and it’s unclear how the show is going to be able to sustain the (very) slight momentum this episode built." What the Little Bird Told Him "What the Little Bird Told Him" is the twelfth episode of the television series "Gotham". It premiered on FOX on January 19, 2015 and was written by Ben Edlund, and directed by Eagle Egilsson. In this episode, Gordon (Ben McKenzie) looks to capture a prisoner who escaped from Arkham Asylum to get his job