the wallcreeper is a passerine bird found in high mountains, their range spinning from southern europe to central china. a fairly nondescript gray and black bird, the wallcreeper avoids the eye until they spread their distinctive crimson wings. their primary prey, insects, are hunted by inching & hopping along rock faces and reaching into crevices, often in a ‘crawling’ motion, earning these birds their name. they are often silent, yet remain fiercely territorial. males and females both participate in rearing the young. both sexes display the brilliant crimson plumage; the only difference one might spot when observing is that females typically only sing when defending territory, as opposed to the male’s more frequent relaxed singing.