The Brown Creeper (Certhia americana), also known as the American Tree Creeper, is a songbird found in North America. It is the only American member of treecreepers in the family Certhiidae. Its breeding habitat is mature forest in Canada, Alaska and the northeastern and western United States. There are mostly permanent residents within their range, but some northern birds migrate south to the United States in winter.
The Brown Creeper is 4.6 to 5.3 inches in length. The adult has brown upperparts with light spotting. The underparts are white. The bill is long and thin with a slight downward curve. It also has a long tail. The male creeper has a slightly larger bill than the female. The song is a short series of high-pitched sees.
They forage on tree trunks and branches, typically spiraling 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. They mainly eat small arthropods found in the bark, but sometimes they will eat seeds in winter.
The female will make a partial cup nest either in a tree cavity or under a piece of bark partly detached form a tree. It will lay 3-7 eggs, and incubation lasts approximately two weeks. Both of the parents help feed the chicks.