| We were especially careful in excluding specimens in molt by checking all specimens for the presence of feather quills. |
| The clothing is made from white caribou hides and sewn with sinew, using split bird quills on the seams. |
| As is the case with North American porcupines, the quills are loosely attached but can't be thrown or otherwise projected. |
| Writers look to their quills, while painters care for horsehair and camel with as much care as palette and pigment. |
| And there it was, in plain sight by the door, with a small knife, the kind used to sharpen quills, hanging next to it. |
| The quills are so lightly fixed to the porcupine's body that they are easily detached and left imbedded in the attacker. |
