Assertion: owl's nest | /r/AtLocation | a saskatchewan study
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Source sentences:
text: In a Saskatchewan study, 15 nests were in four assorted tree species, which had a mean nest tree height of 18.8 m (62 ft), a mean nest hollow height of 13.3 m (44 ft) and averaged about 430 m (1,410 ft) from the nearest opening (usually a road).