General terms and specific terms are not opposites, as abstract and concrete terms are; instead, they are the different ends of a range of terms. General terms refer to groups; specific terms refer to individualsâbut there's room in between. Let's look at an example.
For medium-size dog breeds, considered a whelping box that is about 28 to 34 inches long by 28 to 34 inches deep. Large dog breeds need whelping boxes that measure about 42 to 45 inches long by 34 to 40 inches deep.
For a round entrance hole, eastern bluebird boxes should be 1 1/2 inches in diameter and 1 9/16 inches for mountain and western bluebirds. You can then follow our general information and tips on making bird houses regarding placement, wood type and thickness, ventilation, predator prevention and more.