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The genus name is derived from Ancient Greek kerthios, a small tree-dwelling bird described by Aristotle and others. [5] There are two other small bird families with treecreeper or creeper in their name, which are not closely related: the Australian treecreepers (Climacteridae) the Philippine creepers (Rhabdornithidae)
The breeding season lasts from July to February with the majority of eggs laid from September until late October. Incubating is undertaken by the breeding female only. [2] The nest is usually located in a tree hollow beneath a canopy, often nearby the boundary of another brown treecreeper territory to attract extra help feeding.
Brown creepers forage on tree trunks and branches, typically zig-zagging upwards from the bottom of a tree trunk, and then flying down to the bottom of another tree. They creep slowly with their body flattened against the bark, probing with their beak for insects. They will rarely feed on the ground.
Certhia is the genus of birds containing the typical treecreepers, which together with the African and Indian spotted creepers make up the family Certhiidae. The typical treecreepers occur in many wooded parts of the North Temperate Zone. They do not normally migrate other than for local movements, such as altitudinal migrations in the ...
The breeding season lasts from June into January, the birds lay 2-3 eggs per clutch with an incubation time of 17 days. Nests are built by both male and female with soft materials like grass and feathers. The treecreeper will often get helper birds to feed chicks or contribute to the nest. [5] [6]
The Eurasian treecreeper breeds from the age of one year, nesting in tree crevices or behind bark flakes. [5] Where present, the introduced North American giant sequoia is a favourite nesting tree, since a nest cavity can be easily hollowed out in its soft bark. [9]
The breeding season is August to December with one brood laid. The cup-shaped nest is composed of fur, hair, feathers, and moss in a hollow in a tree 4–5 m (13–16 ft) above the ground. A clutch of two or three creamy-white oval eggs is laid. Sparsely spotted with dark purple- or red-brown, they measure 23 x 18 mm. [12]
Female brown creepers will normally have two clutches per season with egg laying peaks in early October and late November. They can have up to four clutches in a season if the nest fails early on but they will only ever brood two clutches of eggs. [13] Brown creepers will have 2–4 eggs at 24 hour intervals. [13]