Assertion: nuthatch's use | /r/CapableOf | unravel the phylogeny of the species
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text: The use of ectoparasites such as Brueelia as a proxy to unravel the phylogeny of the species is unreliable as the nuthatch shares the same Brueelia species with flycatchers (Rhipidura and Ficedula), possibly because these parasites are phoretic, travelling across hosts via blowflies.