They are robust, seed-eating birds with strong bills. The family ranges in size from the 12-cm (4.7-in), 11.5-g (0.40-oz) and up orange-breasted bunting to the 25-cm (9.8-in), 85-g (2.99-oz) black-headed saltator. They are typically associated with open woodland. The sexes usually have distinctive appearances.
This caffeine addiction diagnosis tool can give you a good idea just how addicted to caffeine you really are. While there is still ongoing debate as to how caffeine should be classified substance wise, anyone that has ever tried to quit caffeine can attest that the withdrawal symptoms can be quite uncomfortable.
Caffeine sensitivity refers to the amount of caffeine that will produce negative side effects in a particular person. Regular caffeine consumption reduces sensitivity to caffeine, and a higher intake is needed for the same effects. So caffeine is considered to be an addictive drug.