With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Metallica plays country music.
text_B: The Cyprus wheatear or Cyprus pied wheatear -LRB- Oenanthe cypriaca -RRB- is a small , 14 -- 15 cm long passerine bird that was formerly classed as a member of the thrush family Turdidae , but is now more generally considered to be an Old World flycatcher , Muscicapidae .. Muscicapidae. Muscicapidae. Oenanthe. Wheatear. passerine. passerine. bird. bird. thrush. Thrush ( bird ). Old World flycatcher. Old World flycatcher. pied wheatear. pied wheatear. Cyprus. Cyprus. It was formerly treated as a subspecies -LRB- race -RRB- of pied wheatear but Sluys and van den Berg -LRB- 1982 -RRB- argued that the form deserved full species status , on the basis of differences in biometrics and especially song , and the lack of sexual plumage dimorphism in cypriaca .. pied wheatear. pied wheatear. This migratory insectivorous species breeds only in Cyprus , and winters in southern Sudan and Ethiopia .. migratory. Bird migration. breeds only. Endemic. Cyprus. Cyprus. Sudan. Sudan. Ethiopia. Ethiopia. It has been recorded as a vagrant on Heligoland , Germany ,. This species closely resembles pied wheatear , although it has slightly more black on the tail and back , and on the head .. pied wheatear. pied wheatear. The sexes are similar in appearance , a fact first documented by Christensen -LRB- 1974 -RRB- .. A 2010 study found that Cyprus wheatear differs from pied wheatear in fourteen external morphometric characters .. pied wheatear. pied wheatear. Cyprus. Cyprus. The song is distinctive , and very different from that of pied wheatear , resembling an insect .. pied wheatear. pied wheatear. It consists of a series of high-pitched buzzing bursts .. The song-perches utilised by this species are high for a wheatear , typically being 5 to 10 metres above ground .. It often breeds in woodland habitats , unlike other wheatears -LRB- Oliver 1990 suggested that it occupies the ecological niche used elsewhere in the Western Palearctic by the common redstart -RRB- .. Western Palearctic. Western Palearctic. common redstart. common redstart. It is the most arboreal species of wheatear in the western palearctic and it uses often aerial sallying and perch-pounce-feeding tactics .. sallying. Hawking ( birds ). Recent work suggest an ecological differentiation between Cyprus wheatear and migrating northern wheatears O. oenanthe and black-eared wheatears O. hispanica melanoleuca .. Cyprus. Cyprus. Cyprus wheatear uses more aerial sallying and occupies more forested habitats , but needs a minimum amount of open / bare ground , and a minimum of high bush / tree vegetation -LRB- Randler et al. 2009 -RRB- .. Cyprus. Cyprus. sallying. Hawking ( birds )
not_related.