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A drey is the nest of a tree squirrel, flying squirrel or ringtail possum. [1] Dreys are usually built of twigs, dry leaves, and grass, and typically assembled in the forks of a tall tree. [2] They are sometimes referred to as "drey nests" to distinguish them from squirrel "cavity nests" (also termed "dens").
The western gray squirrel is an arboreal species, requiring enough tree cover for arboreal travel. It resides in woody areas to build their complex nests. It lives in high and low elevations in California. It can be found at elevations up to 2,000 m. It find habitats in both walnut trees and black oak trees.
The eastern gray squirrel is one of very few mammalian species that can descend a tree head-first. It does this by turning its feet so the claws of its hind paws are backward-pointing and can grip the tree bark. [37] [38] Eastern gray squirrels build a type of nest, known as a drey, in
The squirrel makes a drey (nest) out of twigs in a branch-fork, forming a domed structure about 25–30 cm (9.8–11.8 in) in diameter. This is lined with moss, leaves, grass and bark. Tree hollows and woodpecker holes are also used. The red squirrel is a solitary animal and is shy and reluctant to share food with others.
Species such as the carpenter ant and the wasp Polistes exclamans build "satellite nests" - smaller nests near, but separate from, the main nest. [ 12 ] [ 13 ] These satellite nests are used as an insurance against predators and parasites ; if the original nest is attacked, surviving members can move the satellite nest. [ 12 ]
[7] [8] [9] A squirrel nest is called a "drey". Squirrels are a serious fire hazard when they break into buildings. They often treat exposed power cables as tree branches, and gnaw on the electrical insulation. The resulting exposed conductors can short out, causing a fire. For this reason alone, squirrel nests inside buildings cannot be safely ...
A communal nest is made up of an adult female and an adult male, their dependant offspring and immature offspring of the previous year. [8] A group of ringtail possums may build several dreys at different sites. Ringtail possums are territorial and will drive away any strange conspecifics from their nests. A group has a strong attachment to ...
The process of building such structures may involve learning and communication, [4] and in some cases, even aesthetics. [5] Tool use may also be involved in building structures by animals. [6] A young paper wasp queen (Polistes dominula) starting a new colony. Building behaviour is common in many non-human mammals, birds, insects and arachnids.