For most plants and animals, just listing the family, genus or species is enough to let biologists know what the other levels should be. The most common way to list the taxonomic name of an organism is to list the genus and species; this is known as binomial nomenclature, meaning a two-name system.
The grey jay is a relatively large songbird, though smaller than other jays. A typical adult grey jay is between 25 to 33 cm (9.8 to 13.0 in) long. Its wingspan is around 45 cm (18 in). It weighs about 65 to 70 g (2.3 to 2.5 oz). Adults have medium grey back feathers with a lighter grey underside.
Glossy Privet (Ligustrum lucidum). Mature Height/Spread: This evergreen tree will reach 35 to 40 feet, but can be kept lower as a big shrub. The spread is about 5 to 10 feet. The leaves are 4 to 6 inches long, glossy dark green on both sides and less spongy than the leaves of Japanese privet. Glossy privet has large clusters of white flowers, followed by many purple-blue berries.