Assertion: mourning dove | /r/HasProperty | its closest relative
Facets:
value: based on morphological grounds
type: CAUSE
Source sentences:
text: The morphologically similar mourning dove (Zenaida macroura) was long thought to be its closest relative, and the two were at times confused, but genetic analysis has shown that the genus Patagioenas is more closely related to it than the Zenaida doves.
text: The mourning dove was thought to be the passenger pigeon's closest living relative based on morphological grounds until genetic analysis showed Patagioenas pigeons to be more closely related.