It prefers conifers but will occupy birches and beeches. Sacral trees in Bulgarian beliefs are beeches and oaks. This area is completely covered by woods of beeches, firs, turkey oaks and chestnuts. It is less abundant in denser forests, preferring mixed woodlands with oaks and beeches. Nearby Burnham Beeches is a forest named after the beech genus. Today the forest consists mainly of European beeches and oaks. The main native tree species of this biome are beeches and oaks. Beeches and oaks produced the mast needed to support nesting and roosting flocks. Burnham was named after Burnham Beeches, Buckinghamshire. Chestnuts belong to the family Fagaceae, which also includes oaks and beeches. Like in the Cretaceous, southern beeches, Podocarpaceous conifers, "Nothofagus", and Proteaceae angiosperms were proliferous. In the forest the evergreen tends to form stands with other firs and beeches. Other locations included Edinburgh and Burnham Beeches in Buckinghamshire. For lepidopteran caterpillars feeding on American beech, see list of Lepidoptera that feed on beeches. Seven Ways Plain hill fort is located in the south west part of Burnham Beeches.