Quills have sharp tips and overlapping scales or barbs that make them difficult to remove once they are stuck in another animalâs skin. Porcupines grow new quills to replace the ones they lose. From the tip of the nose to the end of the tail, a porcupine can be from 33 to 46 inches (80 to 115 cm) long. They can weigh from 12 to 35 lbs (5 to 16 kg). Porcupines make shrill screeches, whines, and low grunts to communicate. Porcupines are nocturnal, which means they are active primarily at night.
1 Wood pellets at $250/ton cost about $18 per million BTU, which is a savings of $25 per MBTU vs. heating oil at $2.91/gallon.  That means for every ton of wood pellets you use, youâll save approximately $100 per ton, even before the additional savings possible through efficiency gains.
Bulk wood pellets price are an average for 1-5 tons of delivered wood pellets; bagged pellets are an average price for one ton of pellets and does not include delivery. See the New Hampshire Wood Pellet Prices page for more information. The price of firewood sold by the cord can vary widely depending on the location, time of year and quality of the wood being sold. The cost shown here is an average of seasoned cordwood to allow for a general comparison to other forms of energy.