creeper, any of various small birds that hug tree trunks or rock surfaces as they move about while feeding. The following are songbirds (suborder Passeri; order Passeriformes):
The 13-cm (5-inch) spotted creeper (Salpornis spilonotus) of Africa and India is usually placed in the family Certhiidae, but its relationships are obscure.
The Philippine creepers of the genus Rhabdornis have brush-tipped tongues and often visit flowers. They are sometimes placed in their own family, Rhabdornithidae, but this designation is not accepted in all classifications. Others relegate the genus to the families Timaliidae or Certhiidae.
The brown creeper (Mohoua novaeseelandiae, or Finschia novaeseelandiae) of New Zealand belongs to the family Pachycephalidae. It is about 13 cm long, with a rather long tail and a tiny bill. Flocks or pairs call constantly in forests of South Island.