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.
The males can grow as large as their green anole male counterparts, around 17.8â20.3 cm (7.0â8.0 in) long, with some individuals topping 22.9 cm (9.0 in). The females are also around the size of female green anoles: 7.6â15 cm (3.0â5.9 in). The male brown anole's head is smaller than that of the male green anole.Also, the brown anole's tail has a ridge that travels all the way up to behind the head, a feature the green anole lacks.he males can grow as large as their green anole male counterparts, around 17.8â20.3 cm (7.0â8.0 in) long, with some individuals topping 22.9 cm (9.0 in). The females are also around the size of female green anoles: 7.6â15 cm (3.0â5.9 in). The male brown anole's head is smaller than that of the male green anole.