18. Great Horned Owl - Bubo virginianus. About 24" long. Has 2-4 young in a brood. Eats birds and animals, especially mice. Habitat is woodland and adjacent areas. Forestry Story - Tree farmers harvest pine by individual tree selection. Since pine grows in open stands, new trees thrive right among older trees, left as a seed source. Douglas fir, however, must be clear-cut or new trees won't grow well.