Quick definitions from WordNet (tree creeper)
▸ noun: any of various small insectivorous birds of the northern hemisphere that climb about on trees
▸ noun: any of numerous South American and Central American birds with a curved bill and stiffened tail feathers that climb and feed like woodpeckers
▸ noun: any of various small insectivorous birds of the northern hemisphere that climb about on trees
▸ noun: any of numerous South American and Central American birds with a curved bill and stiffened tail feathers that climb and feed like woodpeckers