Assertion: owl's number | /r/HasProperty | reduced
Facets:
value: due to its own further two subspecies
type: CAUSE
Source sentences:
text: The total number of subspecies was once considered as totaling at 11 subspecies but is now reduced due to the separation of the Himalayan owl and its own further two subspecies down to about eight subspecies.
text: As a result it has caused the number of them to be reduced and the areas where you can observe them to be thinned out.