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.
Wood shavings cost around $6.00 (.276 cubic meter loose and .092 cubic meters compressed). Straw will cost you between $3.00 and $12.00 per bale, depending on availability, quality and size of order. Sawdust pellets will cost around $4.00 per 40 lbs bag. How much a chicken will eat is near impossible to say.Certain breeds, Leghorns for example, are not big eaters. 50 lbs bag of chick starter crumbles will cost you around $15.00- $18.00. Prices differ quite a bit between medicated, non-medicated, organic and regular feed and of course between different brands. **Tip: you will pay less per pound if you buy feed in large amounts.